Melt-processable acrylonitrile-methyl acrylate copolymers and melt-spun fibers containing MicroPCMs
Melt-processable acrylonitrile-methyl acrylate copolymers and melt-spun fibers containing MicroPCMs
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DOI：
10.1007/s10853-009-3830-z
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发表时间：
2009-11-01
影响因子：
4.5
通讯作者：
Yu, Wan-yong
中科院分区：
文献类型：
--
作者：
Gao, Xi-yin;Han, Na;Yu, Wan-yong
采用水相氧化还原引发聚合法合成了丙烯腈-丙烯酸甲酯（AN/MA摩尔比85/15）共聚物和含5- 25wt%微胶囊相变材料（MicroPCMs）的共聚物。在聚合步骤中将微PCM掺入共聚物中。采用环境友好的无溶剂熔融纺丝法对共聚物进行了加工。采用核磁共振（H-1 NMR）、凝胶渗透色谱（GPC）、傅里叶变换红外光谱（FTIR）、差示扫描量热法（DSC）、热重分析（TG）、扫描电子显微镜（SEM）、X射线衍射（XRD）和熔融指数（MI）对共聚物和含MicroPCMs的初生纤维的结构和性能进行了表征。结果表明，AN与MA的投料比与AN-MA共聚物的组成相吻合。含有MicroPCM的共聚物可以在200 A摄氏度下加工。含20wt%和25wt% MicroPCMs的纤维的结晶度分别为21和25 J/g，并且它们随着MicroPCMs含量的增加而稳定地增加。初生纤维的拉伸强度在1.0- 3.2cN/dtex的范围内。该纤维可用作制造舒适性服装的调温织物的原料。
Acrylonitrile-methyl acrylate (AN-MA molar ratio 85/15) copolymer and copolymers containing 5-25 wt% of microencapsulated phase change materials (MicroPCMs) were synthesized by aqueous redox initiated polymerization. MicroPCMs were incorporated into the copolymer at the step of polymerization. The copolymers were processed by environment friendly, solvent-free melt-spinning. The structures and properties of the copolymers and as-spun fibers containing MicroPCMs were characterized by Nuclear Magnetic Resonance (H-1 NMR), Gel Permeation Chromatography (GPC), Fourier Transform Infrared Spectroscopy (FTIR), Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TG), Scanning Electronic Microscope (SEM), X-ray Diffraction (XRD), and Melting Index (MI). The results show that the composition of AN-MA copolymer agrees well with the feeding ratio of AN and MA. The copolymers containing MicroPCMs can be processed at 200 A degrees C. The crystalline enthalpies of the fibers containing 20 and 25 wt% of MicroPCMs are 21 and 25 J/g, respectively; and they increase steadily as the contents of MicroPCMs increase. Tensile strengths of the as-spun fibers are in the range of 1.0-3.2 cN/dtex. The fibers are potentially used as raw materials to fabricate thermo-regulated fabric for comfort clothing.