CAJ | 학술논문

以衣康酸酐（IAn）和L‐丙交酯（LLA）为单体、辛酸亚锡为催化剂，采用熔融开环聚合的方法合成一种新型的生物基聚乳酸共聚物（IAn‐PLLA）．用1 H‐NMR、GPC、DSC、TGA、XRD、水降解测试表征共聚物的结构与性能．1 H‐NMR结果表明，合成的共聚物为预期产物；DSC和TGA分析表明，随着IAn摩尔比增大，IAn‐PLLA的熔点和玻璃化转变温度降低，但仍有较好的热稳定性；磷酸盐缓冲溶液（pH＝7.4）中的降解测试结果表明，随着衣康酸酐含量的增加，共聚酯的降解速率显著提高．
이의강산항（IAn）화L‐병교지（LLA）위단체、신산아석위최화제，채용용융개배취합적방법합성일충신형적생물기취유산공취물（IAn‐PLLA）．용1 H‐NMR、GPC、DSC、TGA、XRD、수강해측시표정공취물적결구여성능．1 H‐NMR결과표명，합성적공취물위예기산물；DSC화TGA분석표명，수착IAn마이비증대，IAn‐PLLA적용점화파리화전변온도강저，단잉유교호적열은정성；린산염완충용액（pH＝7.4）중적강해측시결과표명，수착의강산항함량적증가，공취지적강해속솔현저제고．
A novel biobased polylactide copolymer (IAn‐PLLA ) was synthesized via melting ring‐opening polymerization of itaconic anhydride (IAn ) with L‐lactide (LLA ) in the presence of stannous octoate as a catalyst .The structure and properties of the prepared copolymers were confirmed with 1 H‐NMR , GPC , DSC , TGA , XRD and hydrolytic degradation test .1 H‐NMR spectra showed that the synthetic copolymers were the expected products .DSC and TGA analysis indicated that the melting point (Tm ) and glass transition temperature(Tg ) of IAn‐PLLA decreased with the increasing of IAn reaction mole ratios , but they still had excellent thermal stability .The result of degradation tests in the phosphate buffer solution (pH=7.4) indicated that the degradation rate of copolymers had significantly increased with the increasing IAn content .