聚(3-羟基丁酸酯-co-4-羟基丁酸酯)熔融接枝马来酸酐的研究  

Study on melt grafting MAH on P(3HB-co-4HB)

作　　者：彭全[1] 卢秀萍[1] 温幸[1] 朱富艳[1] 郑宁[1] 

机构地区：[1]天津科技大学材料科学与化学工程学院,天津300222

出　　处：《化工新型材料》2011年第3期92-94,97,共4页New Chemical Materials

摘　　要：采用熔融接枝法制备P(3HB-co-4HB)-g-MAH。通过接触角测定仪、偏光显微镜、扫描电子显微镜和电子万能试验机等研究了MAH和BPO的用量对共聚物接枝率的影响,考察了P(3HB-co-4HB)接枝前后接触角、结晶形态、力学性能的变化,P(3HB-co-4HB)及其接枝物与木粉共混物的力学性能等。结果表明:随着MAH及BPO用量的增加,接枝率呈先增大后降低的趋势;与纯P(3HB-co-4HB)相比,P(3HB-co-4HB)-g-MAH的接触角明显减小,亲水性提高,球晶尺寸变小,缺口冲击强度显著提高;P(3HB-co-4HB)-g-MAH/木粉共混材料的力学性能优于P(3HB-co-4HB)/木粉共混材料。P（3HB-co-4HB）-g-MAH was prepared via melt grafting technology.contact angle instrument,polarized optical microscopy（POM）,scanning electron microscope（SEM） and electronic universal tester etc.were used to characterize the effects of the MAH and BPO dosages on grafting ratio and investigate the deference of contact angle,spherulitic morphology and mechanical properties between P（3HB-co-4HB） and P（3HB-co-4HB）-g-MAH.The results showed that there was a maximum grafting ratio with the increase of MAH and BPO dosages.Comparing with pure P（3HB-co-4HB）,the contact angle and hydrophilicity of P（3HB-co-4HB）-g-MAH decreased and are improved significantly.P（3HB-co-4HB）-g-MAH has more refined spherulite and higher notched impact strength than that of P（3HB-co-4HB）.The mechanical properties of P（3HB-co-4HB）-g-MAH/ wood flour composite were better obviously than that of P（3HB-co-4HB）/wood flour composite.

关 键 词：聚(3-羟基丁酸酯-co-4-羟基丁酸酯) 熔融接枝 木粉 共混材料 

分 类 号：R318.08[医药卫生—生物医学工程]