The influence of melt polycondensation and solvent refluxing methods of lactide polymerization and chain extension agents on relative molecular weight of polylactide was studied.
研究了乳酸熔融缩聚和溶剂回流脱水缩聚两种聚合方法及几种扩链剂对乳酸聚合物相对分子质量的影响。
The thermotropic liquid crystalline block copolyesters with flexible space group in main chain were synthesized via solution polycondensation.
用溶液缩聚法合成了含柔性间隔基的嵌段热致液晶共聚酯。
The thermotropic liquid crystalline block copolyesters with flexible space group in main chain were synthesized via solution polycondensation.
用溶液缩聚法合成了含柔性间隔基的嵌段热致液晶共聚酯。
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