PHB和PHBV增韧、增塑改性研究进展

Progress in Toughening and Plasticization of Poly(hydroxybutyrate)and Poly(hydroxybutyrate-co-hydroxyvalerate)

总结了近年来国内外关于聚羟基丁酸酯(PHB)和聚羟基丁酸酯-co-羟基戊酸酯共聚物(PHBV)在增韧和增塑改性方面的研究进展。通过应力-应变行为和冲击强度等性能指标,对弹性体、酚类化合物、反应性增韧、超高相对分子质量聚乙二醇、淀粉、羟基烷酸酯、热处理等增韧改性方法和效果、改性产物进行了评述；通过熔点、玻璃化转变温度、冷结晶温度等性能指标,对共聚改性、中小相对分子质量聚乙二醇、环氧大豆油等增塑剂增塑改性方法、效果以及改性产物进行了详细介绍。最后对PHB和PHBV生物降解材料的发展前景进行了展望。

The recent development in the toughening and plasticization of poly（hydroxybutyrate） （PHB） or poly （hydroxybutyrate-co-hydroxybutyvalerate） （PHBV） was reviewed. The polymers that were used as tougheners included elastomers, phenol group compound, high molecular weight poly（ethylene glycol）, starch, and poly （hydroxyalkanoates）. Low-molecular weight poly （ethylene glycol ） and epoxidized soybean oil were used as plasticizers. The effect of toughening was observed via stress-strain behavior and impact strength while that of plastidzation were evaluated via melt temperature, glass transition ternperamre and oold crystallization temperature. The future development of PHB and PHBV was forecasted.