聚（1，3-己二酸丙二醇酯）功能化羟基多壁碳纳米管的非等温结晶  

Non-isothermal Crystallization of Poly （1, 3-Propylene Glycol- Hexanedioic Acid） Grafted Hydroxyl Multi-wall Carbon Nanotubes

作　　者：孟庆杰[1] 张兴祥[1] 白世河[1] 王学晨[1] 

机构地区：[1]天津工业大学天津改性与功能性纤维重点实验室功能纤维研究所,天津300160

出　　处：《纳米科技》2008年第4期42-49,共8页

摘　　要：以羟基多壁碳纳米管、1，3-丙二醇、己二酸为原料，采用原位聚合法合成聚（1，3-己二酸丙二醇酯）功能化羟基多壁碳纳米管。采用差热扫描量热法测定产物的结晶和熔融行为。羟基多壁碳纳米管的添加量和冷却速率对聚（1，3-己二酸丙二醇酯）功能化羟基多壁碳纳米管的非等温结晶行为有一定的影响。在一定范围内，随着羟基多壁碳纳米管含量的增加，产物结晶温度增加。冷却速率增加，产物的结晶温度降低。羟基多壁碳纳米管起到异相成核的作用并促进结晶生长。少量羟基多壁碳纳米管对促进聚合产物结晶更加有效。Jeziorny方法描述聚合产物的非等温结晶行为出现偏离，Avrami-Ozawa方法可以更有效地描述其非等温结晶行为。A series of poly （1, 3-propylene glycol-hexanedioic acid） grafted hydroxyl multi-wall carbon nanotubes （PHHCNT） are prepared by in situ polymerization using hydroxyl carbon nanotubes （HCNTs）, 1, 3-propylene glycol and hexanedioic acid as reactants. Unique crystallizing and melting behaviors of PHHCNT were examined by using differential scanning calorimetry （DSC）. The non-isothermal crystallization behaviors and kinetics of PHHCNT significantly depend on the feed content of HCNTs and cooling rate. To a certain extent, the crystallization peak temperatures （Tc） of PHHCNT tend to shift to a higher temperature region with increasing feed content of HCNTs, HCNTs accelerate the formation of heterogeneous nuclei and crystal growth. A small quantity of HCNTs is more effective in enhancing the crystallizing rate and enthalpy of PHHCNT. Jeziorny equation is deviate from the truth in describing the non-isothermal crystallization of PHHCNT while Avrami-Ozawa equation is more effective.

关 键 词：羟基多壁碳纳米管 聚(1 3-己二酸丙二醇酯) 非等温结晶 成核 

分 类 号：TB34[一般工业技术—材料科学与工程]