Miscibility and Phase Morphology of Polylactide/Poly(vinyl acetate-co-vinyl alcohol) Blends Obtained by Melt Mixing

作者：Liu Qingsheng^*; Jiang Jizhong; Zhang Hongxia; Wang Jincheng; Li Xuming; Li Yuhao; Deng Bingyao

来源：Polymer - Plastics Technology and Engineering, 2014, 53(15): 1590-1597.

DOI：10.1080/03602559.2014.919641

• Degree of hydrolysis (DH)
• Miscibility
• Phase morphology
• Poly(vinyl acetate-co-vinyl alcohol) (P(VAc-co-VA))
• Polylactide (PLA)

Poly(vinyl acetate-co-vinyl alcohol)s (P(VAc-co-VA)s) with different degree of hydrolysis (DH) were blended with polylactide (PLA) by melt mixing to prepare PLA/P(VAc-co-VA) blends with various weight ratios. PLA and PVAc were miscible. For blends of PLA and P(VAc-co-VA) with DH from 13.8 similar to 55.1%, PLA and P(VAc-co-VA) s were partly miscible. For PLA/P(VAc-co-VA(14)) blends with P(VAc-co-VA(14)) of 5-50wt.%, PLA/P(VAc-co-VA(33)) with P(VAc-co-VA(33)) of 5-50wt.%, and PLA/P(VAc-co-VA(55)) with P(VAc-co-VA(55)) of 5-20 wt.%, P(VAc-co-VA)s were dispersed in PLA uniformly. The size of dispersed phase changed with the content and DH of P(VAc-co-VA). When the content of P(VAc-co-VA(55)) in PLA/P(VAc-co-VA(55)) blends was above 30 wt.%, the dual continuous phase formed.

• 出版日期2014
• 单位绍兴文理学院; 江南大学