Synthesis and Characterization of Stereo Multiblock Poly(lactic acid)s with Different Block Lengths by Melt Polycondensation of Poly(L‐lactic acid)/Poly(D‐lactic acid) Blends
Synthesis and Characterization of Stereo Multiblock Poly(lactic acid)s with Different Block Lengths by Melt Polycondensation of Poly(L‐lactic acid)/Poly(D‐lactic acid) Blends
复制标题
通过聚（L-乳酸）/聚（D-乳酸）共混物的熔融缩聚合成和表征具有不同嵌段长度的立体多嵌段聚乳酸
DOI：
10.1002/mren.201200032
复制
发表时间：
2012
影响因子：
1.5
通讯作者：
H. Tsuji
中科院分区：
文献类型：
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作者：
Md. Hafezur Rahaman;H. Tsuji
采用熔融缩聚法合成了不同嵌段长度的立体多嵌段聚乳酸（PLA），其分子量范围为1.1-5.2× 103 g· mol-1。结果表明，多嵌段PLA的平均嵌段长度（νav）随共混物的分子量和反应温度的增加而增加，而多嵌段PLA的分子量和PDI随共混物的分子量、反应时间和反应温度的增加而增加。具有νav> 7的立体多嵌段PLA可结晶以形成立体复合物微晶，并且立体多嵌段PLA的结晶度和熔融温度随着立体多嵌段PLA的νav和M\rmw的增加而增加。
Stereo multiblock PLAs with different block lengths are synthesized by melt polycondensation of low‐molecular‐weight poly (l‐lactic acid)/poly (d‐lactic acid) blends with a wide variety of M_\rmw in the range of 1.1–5.2× 103 g· mol–1. The average block length (νav) of the stereo multiblock PLAs increases with increasing M_\rmw of the blend and with the reaction temperature, whereas M_\rmw and PDI of the stereo multiblock PLAs increases with increasing M_\rmw of the blend, the reaction time, and the temperature. Stereo multiblock PLAs with νav> 7 are crystallizable to form stereocomplex crystallites, and the crystallinity and melting temperature of the stereo multiblock PLAs increases with increasing νav and M_\rmw of the stereo multiblock PLAs.
影响因子：
--
作者：
Wang, YB;Hillmyer, MA
通讯作者：
Hillmyer, MA
影响因子：
5.9
作者：
Tsuji, Hideto;Tsuruno, Tomonori
通讯作者：
Tsuruno, Tomonori