摘要
采用熔融共混的方法制备了聚甲醛(POM)/丁二酸丁二醇酯-己二酸丁二醇酯共聚物(PBSA)合金.利用FTIR、DMA、DSC、PLM及WAXD研究了POM与PBSA分子间相互作用、相容性及结晶行为.结果表明PBSA的羰基和POM的端羟基之间形成了氢键,这使得PBSA和POM具有一定的相容性,同时使POM的熔融与结晶温度降低;当POM含量为15%时对PBSA起到成核剂的作用,促进了PBSA的结晶,使其晶体结构变得致密.另外,POM与PBSA之间的相容性依赖于PBSA含量,随着PBSA含量的增大,两者的相容性变好,但是PBSA的加入并没有改变POM的晶型.
A series of polyoxymethylene （ POM）/poly （ butylene succinate-co-butylene adipate） （PBSA） alloys were prepared by melt blending method. Intermolecular interactions, miscibility and crystallization behavior of POM/PBSA blends were studied using FTIR, dynamic mechanical analysis （DMA）, differential scanning calorimetry （DSC）, polarized light microscopy （PLM） and WAXD. The results show that intermolecular hydrogen bonding forms between carbonyl groups of PBSA and hydroxyl groups of POM,which increases the miscibility between PBSA and POM. Meanwhile, melting and crystallization temperatures of POM decrease with addition of PBSA. However, it is worth noting that lower content of POM in alloys has great influence on PBSA crystallization. Incorporation of 15 wt% of POM shows significant nucleating effect for PBSA and promotes its crystallization,resulting in reduced lattice spacing. In addition, the miscibility between POM and PBSA is dependent on the PBSA content. Miscibility of POM/PBSA alloys improves with increasing PBSA content. But the addition of PBSA does not modify the crystal structure of POM.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2016年第7期931-937,共7页
Acta Polymerica Sinica
基金
国家自然科学基金(基金号21264012)资助项目
