An Efficient Organic Additive to Control the Crystallization Rate of Aliphatic Polyketone: A Non-isothermal Crystallization Kinetics Study
writer：He-xin Zhanga, b, Min-Jeong Parka, Young-Kwon Moona, Eun-Bin Ko, Xue-quan Zhang, Keun-Byoung Yoon
keywords：Polyketone; Anhydride; Non-isothermal; Crystallization kinetics
source：期刊
specific source：Chinese Journal of Polymer Science Vol. 35, No. 4, (2017), 547?557
Issue time：2017年
Three types of organic compounds—two carboxylic acids and an anhydride, were used as additives for polyketone (PK). The effect of the additive structure and their feed ratios on the melting temperature, crystallization temperature, and crystallization rate of PK were studied. We found that the crystallization temperature could be reduced significantly by introducing a small quantity of organic additive, in particular, an anhydride. On addition of 1 phr of anhydride, the crystallization temperature was reduced by 10.7 °C. Therefore, the non-isothermal crystallization kinetics of aliphatic PK/anhydride blends with various feed ratios was investigated using DSC. The results were analyzed by various theoretical models, such as Avrami, Ozawa and combined Avrami-Ozawa models.