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Morphology and Mechanical Properties of Poly(Lactic Acid) and Propylene-Ethylene Copolymer Blends: Effect of Organoclay Types
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Comparison of Mechanical Properties of Biocomposites between Polybutylene Succinate/Corn Silk and Polybutylene Succinate/Cellulose Extracted from Corn Silk
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Comparison of Mechanical Properties of Biocomposites between Polybutylene Succinate/Corn Silk and Polybutylene Succinate/Cellulose Extracted from Corn Silk

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Abstract:

Corn silk (CS) is agricultural wastes with high cellulose content and polybutylene succinate (PBS) now is more interesting in production of plastic products due to be biopolymer and high flexibility but it is lack of stiffness and strength. Therefore, the goal of this work was to study the possibility of cellulose extraction from CS fiber which was characterized by Fourier Transform Infrared Spectrometer (FTIR) for using cellulose as a reinforcing filler in PBS. Moreover, the mechanical properties (e.g. flexural and impact testing) of PBS/cellulose biocomposite were investigated and compared with that of neat PBS and PBS biocomposite adding various amounts of sodium hydroxide (NaOH) treated CS. The FTIR results showed the contents of hydroxyl (-OH) and ketone (C=O) groups in extracted CS were lower than ones of virgin CS. It was indicated that hemicellulose and lignin were more removed during extraction process, finally obtained ‘cellulose’. For mechanical testing, both cellulose and treated CS filled in PBS affect the decreased impact strength of PBS biocomposites while flexural strength and flexural modulus were increased. Furthermore, the flexural properties were reduced with enhancing filler contents from 1-15 phr for both fillers. By comparison, the flexural properties of PBS/cellulose were slightly lower than that of PBS/treated CS whereas its impact property was quite higher, especially for 10 phr cellulose loading. Therefore, cellulose can be taken more advantage for composite production by ductile property retention of PBS compared with treated CS. In addition, both cellulose and treated CS can be use as reinforcing filler for polymer to improve stiffness and strength.

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Periodical:

Key Engineering Materials (Volume 737)

Pages:

275-280

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.737.275

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Online since:

June 2017

Authors:

Suppawat Likittheerakarn, Supawadee Kurdpradid, Nanthapon Smittipornpun, Thritima Sritapunya*

Keywords:

Biocomposites, Cellulose, Corn Silk, Polybutylene Succinate

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* - Corresponding Author

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