A POLYLACTIC ACID STEREOCOMPLEX COMPOSITION, ITS MOLDED PRODUCT, A PROCESS FOR ITS MANUFACTURE AND ITS APPLICATION
申请人:INSTITUTE OF CHEMISTRY ACADEMY OF SCIENCES
公开号:US20160272811A1
公开(公告)日:2016-09-22
The instant invention discloses a polylactic acid stereocomplex composition containing pure stereocomplex crystals and a process for its manufacture. The composition according to this invention comprising (a) 30-70 wt % poly (L-lactic acid) (PLLA). (b) 70-30 wt % poly (D-lactic acid) (PDLA) and (c) 0.01-10 wt % nucleating agent, which can be obtained by solution and melt blending. Stereocomplex crystals are preferentially formed according to the invention, and the homocrystals (a crystal form) for the PLLA or PDLA homopolymer can't be observed. The melting temperature of the composition according to the invention is at least 200° C., which is about 30-50° C. higher than the PLLA or PDLA homopolymer.
本发明揭示了一种聚乳酸立体互穴复合物组合物以及其制造方法。该发明的组合物包括(a) 30-70重量%的聚(L-乳酸)(PLLA)。(b) 70-30重量%的聚(D-乳酸)(PDLA)和(c) 0.01-10重量%的成核剂,可以通过溶液和熔融混合获得。根据本发明,立体互穴复合物晶体首选形成,PLL或PDLA单体的同晶体(一种晶体形式)不能被观察到。根据本发明,该组合物的熔点温度至少为200℃,比PLL或PDLA单体高约30-50℃。