Skip to main content
Erschienen in: Journal of Polymer Research 5/2018

01.05.2018 | ORIGINAL PAPER

Plasticizers derived from cardanol: synthesis and plasticization properties for polyvinyl chloride(PVC)

verfasst von: Jie Chen, Zengshe Liu, Xiaoan Nie, Yonghong Zhou, Jianchun Jiang, Rex E. Murray

Erschienen in: Journal of Polymer Research | Ausgabe 5/2018

Einloggen

Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.

search-config
loading …

Abstract

Two natural plasticizers derived from cardanol (CD), cardanol acetate (CA) and epoxidized cardanol acetate (ECA), were synthesized and characterized by 1H NMR and 13C NMR. The plasticizing effects of the obtained plasticizers on semi-rigid polyvinylchloride (PVC) formulations were also investigated. Two commercial phthalate ester plasticizers, dioctyl terephthalate (DOTP) and diisononyl phthalate (DINP), were used as controls. Mechanical and thermal properties, compatibility, thermal stability, microstructure, and workability were assessed by dynamic mechanical analysis (DMA), mechanical analysis, thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and dynamic stability analysis, respectively. Results indicated that the natural plasticizer ECA had overallsuperior flexibility, compatibility, thermal stability, and workability comparable to both controls. The obtained CA and ECA have lower volatility resistance and similar extraction and exudation resistance than that of DOTP and DINP. The CA was further blended with DOTP in soft PVC films. Results of DMA, TGA and mechanicalanalysis indicated that CA can serve as a secondary plasticizer to improve the related properties of soft PVC formulations. These CD derived plasticizers show promise as an alternative to fully or partially replace petroleum-based plasticizers.

Sie haben noch keine Lizenz? Dann Informieren Sie sich jetzt über unsere Produkte:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 102.000 Bücher
  • über 537 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

  • über 67.000 Bücher
  • über 390 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Maschinenbau + Werkstoffe




 

Jetzt Wissensvorsprung sichern!

Literatur
1.
Zurück zum Zitat Braslau R, Schäffner F, Earla A (2013) Polymeric phthalates: potential nonmigratory macromolecular plasticizers. J. Polym. Sci. Pol. Chem 51:1175–1184CrossRef Braslau R, Schäffner F, Earla A (2013) Polymeric phthalates: potential nonmigratory macromolecular plasticizers. J. Polym. Sci. Pol. Chem 51:1175–1184CrossRef
2.
Zurück zum Zitat Alexander M, Thachil ET (2006) A comparative study of cardanol and aromatic oil as plasticizers for carbon-black-filled natural rubber. J Appl Polym Sci 102(5):4835–4841CrossRef Alexander M, Thachil ET (2006) A comparative study of cardanol and aromatic oil as plasticizers for carbon-black-filled natural rubber. J Appl Polym Sci 102(5):4835–4841CrossRef
3.
Zurück zum Zitat Zhou Y, Yang N, Hu S (2013) Industrial metabolism of PVC in China: a dynamic material flow analysis. Resour. Conserv. Recy 73:33–40CrossRef Zhou Y, Yang N, Hu S (2013) Industrial metabolism of PVC in China: a dynamic material flow analysis. Resour. Conserv. Recy 73:33–40CrossRef
4.
Zurück zum Zitat Ali M, Hirai T (2012) Effect of plasticizer on the electric-field-induced adhesion of dielectric PVC gels. J Mater Sci 47:3777–3783CrossRef Ali M, Hirai T (2012) Effect of plasticizer on the electric-field-induced adhesion of dielectric PVC gels. J Mater Sci 47:3777–3783CrossRef
5.
Zurück zum Zitat Vadukumpully S, Paul J, Mahanta N, Valiyaveettil S (2011) Flexible conductive graphene/poly (vinyl chloride) composite thin films with high mechanical strength and thermal stability. Carbon 49:198–205CrossRef Vadukumpully S, Paul J, Mahanta N, Valiyaveettil S (2011) Flexible conductive graphene/poly (vinyl chloride) composite thin films with high mechanical strength and thermal stability. Carbon 49:198–205CrossRef
6.
Zurück zum Zitat Fenollar O, Garcia-Sanoguera D, Sanchez-Nacher L, Lopez J, Balart R (2010) Effect of the epoxidized linseed oil concentration as natural plasticizer in vinyl plastisols. J Mater Sci 45:4406–4413CrossRef Fenollar O, Garcia-Sanoguera D, Sanchez-Nacher L, Lopez J, Balart R (2010) Effect of the epoxidized linseed oil concentration as natural plasticizer in vinyl plastisols. J Mater Sci 45:4406–4413CrossRef
7.
Zurück zum Zitat Brown H, Stevens G (1978) Fracture of slightly plasticized polyvinyl chloride. J Mater Sci 13:2373–2379CrossRef Brown H, Stevens G (1978) Fracture of slightly plasticized polyvinyl chloride. J Mater Sci 13:2373–2379CrossRef
8.
Zurück zum Zitat Choi JS, Park WH (2004) Effect of biodegradable plasticizers on thermal and mechanical properties of poly (3-hydroxybutyrate). Polym Test 23:455–460CrossRef Choi JS, Park WH (2004) Effect of biodegradable plasticizers on thermal and mechanical properties of poly (3-hydroxybutyrate). Polym Test 23:455–460CrossRef
9.
Zurück zum Zitat Koch HM, Bolt HM, Angerer J (2004) Di (2-ethylhexyl) phthalate (DEHP) metabolites in human urine and serum after a single oral dose of deuterium-labelled DEHP. Arch Toxicol 78:123–130CrossRefPubMed Koch HM, Bolt HM, Angerer J (2004) Di (2-ethylhexyl) phthalate (DEHP) metabolites in human urine and serum after a single oral dose of deuterium-labelled DEHP. Arch Toxicol 78:123–130CrossRefPubMed
10.
Zurück zum Zitat Huber WW, Grasl-Kraupp B, Schulte-Hermann R (1996) Hepatocarcinogenic potential of di (2-ethylhexyl) phthalate in rodents and its implications on human risk. Crit Rev Toxicol 26:365–481CrossRefPubMed Huber WW, Grasl-Kraupp B, Schulte-Hermann R (1996) Hepatocarcinogenic potential of di (2-ethylhexyl) phthalate in rodents and its implications on human risk. Crit Rev Toxicol 26:365–481CrossRefPubMed
11.
Zurück zum Zitat Sampson J, De Korte D (2011) DEHP-plasticised PVC: relevance to blood services. Transfus Med 21:73–83CrossRefPubMed Sampson J, De Korte D (2011) DEHP-plasticised PVC: relevance to blood services. Transfus Med 21:73–83CrossRefPubMed
12.
Zurück zum Zitat Becker K, Seiwert M, Angerer J, Heger W, Koch HM, Nagorka R, Roßkamp E, Schlüter C, Seifert B, Ullrich D (2004) DEHP metabolites in urine of children and DEHP in house dust. Int J Hyg Envi Heal 207:409–417CrossRef Becker K, Seiwert M, Angerer J, Heger W, Koch HM, Nagorka R, Roßkamp E, Schlüter C, Seifert B, Ullrich D (2004) DEHP metabolites in urine of children and DEHP in house dust. Int J Hyg Envi Heal 207:409–417CrossRef
13.
Zurück zum Zitat Hill SS, Shaw BR, Wu AH (2001) The clinical effects of plasticizers, antioxidants, and other contaminants in medical polyvinylchloride tubing during respiratory and non-respiratory exposure. Clin Chim Acta 304:1–8CrossRefPubMed Hill SS, Shaw BR, Wu AH (2001) The clinical effects of plasticizers, antioxidants, and other contaminants in medical polyvinylchloride tubing during respiratory and non-respiratory exposure. Clin Chim Acta 304:1–8CrossRefPubMed
14.
Zurück zum Zitat Yang D, Peng X, Zhong L, Cao X, Chen W, Zhang X, Liu S, Sun R (2014) “Green” films from renewable resources: properties of epoxidized soybean oil plasticized ethyl cellulose films. Carbohydr Polym 103:198–206CrossRefPubMed Yang D, Peng X, Zhong L, Cao X, Chen W, Zhang X, Liu S, Sun R (2014) “Green” films from renewable resources: properties of epoxidized soybean oil plasticized ethyl cellulose films. Carbohydr Polym 103:198–206CrossRefPubMed
15.
Zurück zum Zitat Fenollar O, García D, Sánchez L, López J, Balart R (2009) Optimization of the curing conditions of PVC plastisols based on the use of an epoxidized fatty acid ester plasticizer. Eur Polym J 45:2674–2684CrossRef Fenollar O, García D, Sánchez L, López J, Balart R (2009) Optimization of the curing conditions of PVC plastisols based on the use of an epoxidized fatty acid ester plasticizer. Eur Polym J 45:2674–2684CrossRef
16.
Zurück zum Zitat Taghizadeh A, Sarazin P, Favis BD (2013) High molecular weight plasticizers in thermoplastic starch/polyethylene blends. J Mater Sci 48:1799–1811CrossRef Taghizadeh A, Sarazin P, Favis BD (2013) High molecular weight plasticizers in thermoplastic starch/polyethylene blends. J Mater Sci 48:1799–1811CrossRef
17.
Zurück zum Zitat Vieira MGA, Silva MAD, Maçumoto ACG, Santos LOD, Beppu MM (2014) Synthesis and application of natural polymeric plasticizer obtained through polyesterification of rice fatty acid. Mater Res 17:386–391CrossRef Vieira MGA, Silva MAD, Maçumoto ACG, Santos LOD, Beppu MM (2014) Synthesis and application of natural polymeric plasticizer obtained through polyesterification of rice fatty acid. Mater Res 17:386–391CrossRef
18.
Zurück zum Zitat Xie Z, Chen Y, Wang C, Liu Y, Chu F, Jin L (2014) Effects of bio-based plasticizers on mechanical and thermal properties of PVC/wood flour composites. Bio Resour 9:7389–7402 Xie Z, Chen Y, Wang C, Liu Y, Chu F, Jin L (2014) Effects of bio-based plasticizers on mechanical and thermal properties of PVC/wood flour composites. Bio Resour 9:7389–7402
19.
Zurück zum Zitat Coltro L, Pitta JB, Madaleno E (2013) Performance evaluation of new plasticizers for stretch PVC films. Polym Test 32:272–278CrossRef Coltro L, Pitta JB, Madaleno E (2013) Performance evaluation of new plasticizers for stretch PVC films. Polym Test 32:272–278CrossRef
20.
Zurück zum Zitat Rao B, Palanisamy A (2013) Synthesis of bio based low temperature curable liquid epoxy, benzoxazine monomer system from cardanol: thermal and viscoelastic properties. Eur Polym J 49:2365–2376CrossRef Rao B, Palanisamy A (2013) Synthesis of bio based low temperature curable liquid epoxy, benzoxazine monomer system from cardanol: thermal and viscoelastic properties. Eur Polym J 49:2365–2376CrossRef
21.
Zurück zum Zitat Sultania M, Rai J, Srivastava D (2012) Modeling and simulation of curing kinetics for the cardanol-based vinyl ester resin by means of non-isothermal DSC measurements. Mater Chem Phys 132:180–186CrossRef Sultania M, Rai J, Srivastava D (2012) Modeling and simulation of curing kinetics for the cardanol-based vinyl ester resin by means of non-isothermal DSC measurements. Mater Chem Phys 132:180–186CrossRef
22.
Zurück zum Zitat Barreto A, Rosa D, Fechine P, Mazzetto S (2011) Properties of sisal fibers treated by alkali solution and their application into cardanol-based biocomposites. Compos Part A Appl S 42:492–500CrossRef Barreto A, Rosa D, Fechine P, Mazzetto S (2011) Properties of sisal fibers treated by alkali solution and their application into cardanol-based biocomposites. Compos Part A Appl S 42:492–500CrossRef
23.
Zurück zum Zitat Sandrino B, Clemente CDS, Oliveira TMBF, Ribeiro FWP, Pavinatto FJ, Mazzetto SE, de Lima-Neto P, Correia AN, Pessoa CA, Wohnrath K (2013) Amphiphilic porphyrin-cardanol derivatives in Langmuir and Langmuir–Blodgett films applied for sensing. Colloid Surface A 425:68–75CrossRef Sandrino B, Clemente CDS, Oliveira TMBF, Ribeiro FWP, Pavinatto FJ, Mazzetto SE, de Lima-Neto P, Correia AN, Pessoa CA, Wohnrath K (2013) Amphiphilic porphyrin-cardanol derivatives in Langmuir and Langmuir–Blodgett films applied for sensing. Colloid Surface A 425:68–75CrossRef
24.
Zurück zum Zitat Yadav R, Srivastava D (2009) Studies on the process variables of the condensation reaction of cardanol and formaldehyde by response surface methodology. Eur Polym J 45:946–952CrossRef Yadav R, Srivastava D (2009) Studies on the process variables of the condensation reaction of cardanol and formaldehyde by response surface methodology. Eur Polym J 45:946–952CrossRef
25.
Zurück zum Zitat Façanha MAR, Mazzetto SE, Beserra Carioca JO, De Barros GG (2007) Evaluation of antioxidant properties of a phosphorylated cardanol compound on mineral oils (NH10 and NH20). Fuel 86(15):2416–2421CrossRef Façanha MAR, Mazzetto SE, Beserra Carioca JO, De Barros GG (2007) Evaluation of antioxidant properties of a phosphorylated cardanol compound on mineral oils (NH10 and NH20). Fuel 86(15):2416–2421CrossRef
26.
Zurück zum Zitat Mohapatra S, Nando GB (2013) Chemical modification of natural rubber in the latex stage by grafting Cardanol, a waste from the cashew industry and a renewable resource. Ind Eng Chem Res 52:5951–5957CrossRef Mohapatra S, Nando GB (2013) Chemical modification of natural rubber in the latex stage by grafting Cardanol, a waste from the cashew industry and a renewable resource. Ind Eng Chem Res 52:5951–5957CrossRef
27.
Zurück zum Zitat Greco A, Brunetti D, Renna G, Mele G, Maffezzoli A (2010) Plasticizer for poly (vinyl chloride) from cardanol as a renewable resource material. Polym Degrad Stab 95:2169–2174CrossRef Greco A, Brunetti D, Renna G, Mele G, Maffezzoli A (2010) Plasticizer for poly (vinyl chloride) from cardanol as a renewable resource material. Polym Degrad Stab 95:2169–2174CrossRef
28.
Zurück zum Zitat Neuse EW, Van Schalkwyk JD (1977) Cardanol derivatives as PVC plasticizers. II. Plasticizer evaluation. J Appl Polym Sci 21:3023–3033CrossRef Neuse EW, Van Schalkwyk JD (1977) Cardanol derivatives as PVC plasticizers. II. Plasticizer evaluation. J Appl Polym Sci 21:3023–3033CrossRef
29.
Zurück zum Zitat Li M, Jiang J, Zhang J, Yang X, Zhang Y, Li S, Song J, Huang K, Xia J (2014) Preparation of a new liquid thermal stabilizer from rosin and fatty acid and study of the properties of the stabilized PVC. Polym Degrad Stab 109:129–136CrossRef Li M, Jiang J, Zhang J, Yang X, Zhang Y, Li S, Song J, Huang K, Xia J (2014) Preparation of a new liquid thermal stabilizer from rosin and fatty acid and study of the properties of the stabilized PVC. Polym Degrad Stab 109:129–136CrossRef
30.
Zurück zum Zitat Dorsey J, Dorsey G, Rutenberg A, Green L (1977) Determination of the epoxide equivalent weight of glycidyl ethers by proton magnetic resonance spectrometry. Anal Chem 49:1144–1145CrossRef Dorsey J, Dorsey G, Rutenberg A, Green L (1977) Determination of the epoxide equivalent weight of glycidyl ethers by proton magnetic resonance spectrometry. Anal Chem 49:1144–1145CrossRef
31.
Zurück zum Zitat Semsarzadeh M, Mehrabzadeh M, Arabshahi S (2002) Dynamic mechanical behavior of the dioctyl phthalate plasticized polyvinyl chloride–epoxidized soya bean oil. Eur Polym J 38:351–358CrossRef Semsarzadeh M, Mehrabzadeh M, Arabshahi S (2002) Dynamic mechanical behavior of the dioctyl phthalate plasticized polyvinyl chloride–epoxidized soya bean oil. Eur Polym J 38:351–358CrossRef
32.
Zurück zum Zitat Ullah A, Wu J (2013) Feather fiber-based thermoplastics: effects of different plasticizers on material properties. Macromol Mater Eng 298:153–162CrossRef Ullah A, Wu J (2013) Feather fiber-based thermoplastics: effects of different plasticizers on material properties. Macromol Mater Eng 298:153–162CrossRef
33.
Zurück zum Zitat Sears JK, Darby JR (1982) The technology of plasticizers. Wiley, New York Sears JK, Darby JR (1982) The technology of plasticizers. Wiley, New York
34.
Zurück zum Zitat Daniels PH (2009) A brief overview of theories of PVC plasticization and methods used to evaluate PVC-plasticizer interaction. J Vinyl Addit Techn 15:219–223CrossRef Daniels PH (2009) A brief overview of theories of PVC plasticization and methods used to evaluate PVC-plasticizer interaction. J Vinyl Addit Techn 15:219–223CrossRef
35.
Zurück zum Zitat Gontard N, Ring S (1996) Edible wheat gluten film: influence of water content on glass transition temperature. J Agric Food Chem 44:3474–3478CrossRef Gontard N, Ring S (1996) Edible wheat gluten film: influence of water content on glass transition temperature. J Agric Food Chem 44:3474–3478CrossRef
36.
Zurück zum Zitat Gupta V, Drzal L, Lee CC, Rich M (1985) The temperature-dependence of some mechanical properties of a cured epoxy resin system. Polym Eng Sci 25:812–823CrossRef Gupta V, Drzal L, Lee CC, Rich M (1985) The temperature-dependence of some mechanical properties of a cured epoxy resin system. Polym Eng Sci 25:812–823CrossRef
37.
Zurück zum Zitat Wypych G (2004) Handbook of plasticizers. Publishing, Chem. Tec Wypych G (2004) Handbook of plasticizers. Publishing, Chem. Tec
38.
Zurück zum Zitat Da Silva MA, Vieira MGA, Maçumoto ACG, Beppu MM (2011) Polyvinylchloride (PVC) and natural rubber films plasticized with a natural polymeric plasticizer obtained through polyesterification of rice fatty acid. Polym Test 30(5):478–484CrossRef Da Silva MA, Vieira MGA, Maçumoto ACG, Beppu MM (2011) Polyvinylchloride (PVC) and natural rubber films plasticized with a natural polymeric plasticizer obtained through polyesterification of rice fatty acid. Polym Test 30(5):478–484CrossRef
39.
Zurück zum Zitat Soudais Y, Moga L, Blazek J, Lemort F (2007) Coupled DTA–TGA–FT-IR investigation of pyrolytic decomposition of EVA, PVC and cellulose. J Anal Appl Pyrolysis 78:46–57CrossRef Soudais Y, Moga L, Blazek J, Lemort F (2007) Coupled DTA–TGA–FT-IR investigation of pyrolytic decomposition of EVA, PVC and cellulose. J Anal Appl Pyrolysis 78:46–57CrossRef
40.
Zurück zum Zitat Yao Q, Wilkie CA (2001) Thermal degradation of PVC in the presence of polystyrene. J Vinyl Addit Techn 7:26–36CrossRef Yao Q, Wilkie CA (2001) Thermal degradation of PVC in the presence of polystyrene. J Vinyl Addit Techn 7:26–36CrossRef
41.
Zurück zum Zitat Pitchaimari G, Sarma K, Varshney L, Vijayakumar C (2014) Influence of the reactive diluent on electron beam curable funtionalized N-(4-hydroxyl phenyl) maleimide derivatives–studies on thermal degradation kinetics using model free approach. Thermochim Acta 597:8–18CrossRef Pitchaimari G, Sarma K, Varshney L, Vijayakumar C (2014) Influence of the reactive diluent on electron beam curable funtionalized N-(4-hydroxyl phenyl) maleimide derivatives–studies on thermal degradation kinetics using model free approach. Thermochim Acta 597:8–18CrossRef
42.
Zurück zum Zitat Ayrey G, Head B, Poller R (1974) The thermal dehydrochlorination and stabilization of poly (vinyl chloride). J Polym Sci Macr 8:1–49 Ayrey G, Head B, Poller R (1974) The thermal dehydrochlorination and stabilization of poly (vinyl chloride). J Polym Sci Macr 8:1–49
43.
Zurück zum Zitat Lerke I, Szymański W (1977) Radiation yield of hydrogen chloride in gamma-irradiated poly (vinyl chloride) stabilized by epoxy compounds. J Appl Polym Sci 21:2067–2075CrossRef Lerke I, Szymański W (1977) Radiation yield of hydrogen chloride in gamma-irradiated poly (vinyl chloride) stabilized by epoxy compounds. J Appl Polym Sci 21:2067–2075CrossRef
44.
Zurück zum Zitat Grossman RF (1993) Mixed metal vinyl stabilizer synergism. V: Dehydrochlorinations reactions of model compounds. J. Vinyl Addit. Techn. 15:25–28CrossRef Grossman RF (1993) Mixed metal vinyl stabilizer synergism. V: Dehydrochlorinations reactions of model compounds. J. Vinyl Addit. Techn. 15:25–28CrossRef
45.
Zurück zum Zitat Cadogan D, Howick C (1992) Plasticizers. In: Croschwitz JI, Howe-Grant M (eds) Kirk-Othmer encyclopedia of chemical technology. Wiley, New York Cadogan D, Howick C (1992) Plasticizers. In: Croschwitz JI, Howe-Grant M (eds) Kirk-Othmer encyclopedia of chemical technology. Wiley, New York
46.
Zurück zum Zitat Garcia J, Marcilla A (1998) Rheological study of the influence of the plasticizer concentration in the gelation and fusion processes of PVC plastisols. Polymer 39:3507–3514CrossRef Garcia J, Marcilla A (1998) Rheological study of the influence of the plasticizer concentration in the gelation and fusion processes of PVC plastisols. Polymer 39:3507–3514CrossRef
47.
Zurück zum Zitat Marcilla A, García S, Garcia-Quesada J (2008) Migrability of PVC plasticizers. Polym Test 27:221–233CrossRef Marcilla A, García S, Garcia-Quesada J (2008) Migrability of PVC plasticizers. Polym Test 27:221–233CrossRef
48.
Zurück zum Zitat Li M, Zhang J, Huang K, Li S, Jiang J, Xia J (2014) Mixed calcium and zinc salts of dicarboxylic acids derived from rosin and dipentene: preparation and thermal stabilization for PVC. RSC Adv 4:63576–63585CrossRef Li M, Zhang J, Huang K, Li S, Jiang J, Xia J (2014) Mixed calcium and zinc salts of dicarboxylic acids derived from rosin and dipentene: preparation and thermal stabilization for PVC. RSC Adv 4:63576–63585CrossRef
Metadaten
Titel
Plasticizers derived from cardanol: synthesis and plasticization properties for polyvinyl chloride(PVC)
verfasst von
Jie Chen
Zengshe Liu
Xiaoan Nie
Yonghong Zhou
Jianchun Jiang
Rex E. Murray
Publikationsdatum
01.05.2018
Verlag
Springer Netherlands
Erschienen in
Journal of Polymer Research / Ausgabe 5/2018
Print ISSN: 1022-9760
Elektronische ISSN: 1572-8935
DOI
https://doi.org/10.1007/s10965-018-1524-4

Weitere Artikel der Ausgabe 5/2018

Journal of Polymer Research 5/2018 Zur Ausgabe

    Marktübersichten

    Die im Laufe eines Jahres in der „adhäsion“ veröffentlichten Marktübersichten helfen Anwendern verschiedenster Branchen, sich einen gezielten Überblick über Lieferantenangebote zu verschaffen.