增塑剂
材料科学
聚合物
极限抗拉强度
扫描电子显微镜
傅里叶变换红外光谱
高分子化学
复合材料
化学工程
分析化学(期刊)
化学
有机化学
工程类
作者
Étienne Comtois,Basil D. Favis,Charles Dubois
摘要
Abstract Films of nitrocellulose (NC), glycidyl azide polymer (GAP), and nitroglycerine (NG) have been evaluated using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy, dynamic mechanical analysis (DMA), and tensile testing. The SEM micrographs demonstrate that, even at low GAP concentration, a portion of GAP will coalesce into spherical domains due to a saturation effect. This is related to the inability of higher molecular weight GAP to effectively situate itself between NC polymer chains. The addition of a small fraction of lower molecular weight NG completely changes this behavior. DMA confirms that two transitions are present and can be attributed to a plasticizer rich phase (β), a polymer rich phase (α) and that NC plasticized with GAP is in accordance with the Gordon‐Taylor equation. Tensile results show that the addition of a small fraction of NG to a NC/GAP based‐formulation increases elongation at break to values similar to that of the NC/NG base formulation. The combination of these two plasticizers, GAP and NG, allows for the plasticization of NC at significantly lower environmental and human toxicity levels.
科研通智能强力驱动
Strongly Powered by AbleSci AI