强韧化聚(3-羟基丁酸-co-3-羟基戊酸酯)/聚碳酸酯共混物的制备及耐久性研究
Study on preparation and durability of toughened poly(3-hydroxybutyrate-co-3-hydroxyvalerate)/polycarbonate blending films
吕东轩 1徐鹏武 1杨伟军 1钮德宇 1孙钰杰 2马丕明1
作者信息
- 1. 江南大学化学与材料工程学院,江苏 无锡 214122
- 2. 龙口市应急保障服务中心,山东 龙口 265499
- 折叠
摘要
以聚(3-羟基丁酸-co-3-羟基戊酸酯)(PHBV)作为基体,通过共混聚碳酸亚丙酯(PPC)后进行固相拉伸,制备强韧化PHBV/PPC复合薄膜;通过万能拉伸试验机、小角/广角X射线散射仪、场发射扫描电子显微镜、差示扫描量热仪对共混物进行表征.结果表明,当固相拉伸温度为55℃、拉伸速率为300 mm/min,拉伸倍率为3时,对比未拉伸样品,断裂伸长率提高约为66%,拉伸强度提高约为642.9%.当拉伸倍率为3时,取向度从0.88%提升到38.96%,还有效促进了聚合物的结晶,对PHBV的耐久性产生了正向作用,使得其性能更加稳定,对比未拉伸样品有了明显提升:未拉伸样品的韧性下降95%,固相拉伸3倍的样品的韧性下降46%.
Abstract
The toughened poly(3-hydroxybutyrate-co-3-hydroxyvalerate)(PHBV)/polypropylene carbonate(PPC)blending films were prepared through solid-phase stretching and then characterized by using universal tensile testing ma-chine,small-angle/wide-angle X-ray scattering instrument,SEM,and DSC.The PHBV/PPC blending films exhibited an increase in elongation at break by about 66%and in tensile strength by 642.9%at a stretching temperature of 55 ºC,a stretching rate of 300 mm/min,and a stretching ratio 3.The degree of orientation of the blending films was increased from 0.88%to 38.96%at a stretching ratio of 3.This effectively promotes the crystallization of PHBV and generates a positive effect on its durability of PHBV,resulting in more stable performance.The toughness of the unstretched blend-ing film decreased by 94.8%,whereas there was only a reduction by 46%in the toughness of the blending film at a stretching ratio of 3.
关键词
聚(3-羟基丁酸-co-3-羟基戊酸酯)/聚碳酸酯/固相拉伸/力学性能Key words
poly(3-hydroxybutyrate-co-3-hydroxyvalerate)/polycarbonate/solid-phase stretching/mechanical property引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据