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Polymer Bulletin

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15.06.2018 | Original Paper

The properties of chemical cross-linked poly(lactic acid) by bis(tert-butyl dioxy isopropyl) benzene

verfasst von: Xue Ai, Dongmei Wang, Xin Li, Hongwei Pan, Junjun Kong, Huili Yang, Huiliang Zhang, Lisong Dong

Erschienen in: Polymer Bulletin | Ausgabe 2/2019

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Abstract

To improve the thermal stability and mechanical properties of poly(lactic acid) (PLA), bis(tert-butyl dioxy isopropyl) benzene (BIBP) (0–0.4 wt%) as cross-linking agent was introduced into the PLA. The PLA/BIBPx samples were characterized by Fourier transform infrared spectrometry. The gel fraction and degree of swelling of PLA/BIBPx were studied. The thermal and degradation properties of samples were also investigated by means of differential scanning calorimetry and thermogravimetric analysis; the thermal stability of the samples was improved by the addition of BIBP. The complex viscosity (η*), storage modulus (G′), and loss modulus (G′′) were increased with the increase in BIBP content from rheological measurement. The mechanical properties of the PLA/BIBPx blends and PLA/BIBPx films were tested by tensile tests, and the blends’ tensile strength was enhanced due to the cross-linking effect of BIBP. The 0.2 wt% BIBP gave the PLA/BIBPx blends the best mechanical properties, while the 0.1% BIBP made PLA/BIBPx films an optimal mechanical property. The morphology of the tear-fractured surface of the films was also studied, and PLA/BIBP0.1 film revealed more clearly layered structure than PLA.

Vorheriger Artikel Synthesis and characterization of an A2B2-type miktoarm star copolymer based on poly(ε-caprolactone) and poly(cyclohexene oxide)

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Titel: The properties of chemical cross-linked poly(lactic acid) by bis(tert-butyl dioxy isopropyl) benzene
verfasst von: Xue Ai
Dongmei Wang
Xin Li
Hongwei Pan
Junjun Kong
Huili Yang
Huiliang Zhang
Lisong Dong
Publikationsdatum: 15.06.2018
Verlag: Springer Berlin Heidelberg
Erschienen in: Polymer Bulletin / Ausgabe 2/2019
Print ISSN: 0170-0839
Elektronische ISSN: 1436-2449
DOI: https://doi.org/10.1007/s00289-018-2351-9

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