论文部分内容阅读
以一氯乙酸和聚乙二醇为原料,采用溶液聚合法合成了聚氯代乙醇酸-聚乙二醇-聚氯代乙醇酸三嵌段共聚物,以傅立叶红外光谱(FT-IR)、核磁共振仪(1H-NMR)表征了共聚物的结构,由X射线衍射仪(XRD)测定了共聚物的结晶度为47.8%,差示扫描量热仪(DSC)结果表明共聚物中聚氯乙酸与聚乙二醇可以形成均相材料,有很好的相容性;通过端基氯含量法测定共聚物的数均相对分子质量为3326;水接触角测定结果表明聚乙二醇的引入有助于提高共聚物的亲水性。
Polychloroglycolic acid-polyethylene glycol-polychloroglycolic acid triblock copolymer was synthesized by solution polymerization using monochloroacetic acid and polyethylene glycol as raw materials. The FT-IR, The structure of the copolymer was characterized by 1H-NMR. The crystallinity of the copolymer was 47.8% as determined by X-ray diffractometry (XRD). The DSC results showed that the copolymer Acetic acid and polyethylene glycol can form a homogeneous material with good compatibility; the number average molecular weight of the copolymer is determined by terminal chlorine content method 3326; water contact angle measurement results show that the introduction of polyethylene glycol Help to improve the hydrophilicity of the copolymer.