Properties of poly(lactic acid)/epoxidized soybean oil blends

ZHAO Yongqing; CHEN Fuquan; FENG Yanhong; QU Jinping

doi:10.3969/j.issn.0438-1157.2014.10.059

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Properties of poly(lactic acid)/epoxidized soybean oil blends

更新时间：2025-12-10

- Properties of poly(lactic acid)/epoxidized soybean oil blends
- CIESC Journal Issue 10, Pages: 4197-4202(2014)
- 作者机构：
  
  1. 华南理工大学聚合物成型加工工程教育部重点实验室,广东,广州,510640
  2. 华南理工大学制浆造纸工程国家重点实验室,广东,广州,510640
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.10.059
  CLC： Q320.66
- Online First：05 October 2014，
  
  Published：05 October 2014
- 稿件说明：
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ZHAO Yongqing, CHEN Fuquan, FENG Yanhong, et al. Properties of poly(lactic acid)/epoxidized soybean oil blends[J]. CIESC Journal, 2014, (10): 4197-4202.
DOI：

ZHAO Yongqing, CHEN Fuquan, FENG Yanhong, et al. Properties of poly(lactic acid)/epoxidized soybean oil blends[J]. CIESC Journal, 2014, (10): 4197-4202. DOI： 10.3969/j.issn.0438-1157.2014.10.059.

摘要

聚乳酸（PLA）与环氧大豆油（ESO）经熔融共混制得具有高韧性的PLA/ESO共混物，并研究了ESO含量对PLA微观形态、力学和流变性能的影响规律。结果表明：ESO可显著降低PLA的熔体黏度，提高PLA的韧性；PLA/ESO共混物在低ESO含量（10%）时为部分相容，而在高ESO含量（20%和30%）时发生了相分离，从而使共混物的断裂伸长率和冲击强度随ESO含量增加先增大后减小，且分别在ESO含量为20%和15%时达到最大值，约为PLA的17倍和2.9倍，而拉伸强度则随之减小。

Abstract

Poly(lactic acid) (PLA) and epoxidized soybean oil (ESO) was melt blended to prepare the PLA/ESO blends with high toughness. The effects of ESO contents on the phase morphologies

mechanical and rheological properties of the prepared PLA/ESO blends were investigated. The introduction of ESO significantly decreased melt viscosity and improved toughness of PLA. The PLA/ESO blend with low ESO content (10%) was a partially miscible system

whereas that with high ESO content (20% and 30%) exhibited distinct phase separation. Elongation at break and impact strength of the blends increased firstly and then decreased with increasing ESO content. The former reached the maximum value (17 times that of PLA) at ESO content of 20%

and the latter reached the maximum value (2.9 times that of PLA) at ESO content of 15%. Tensile strength of the blends decreased with increasing ESO content.

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