Crystallization of Nylon 6 in the Presence of PBA

Abstract

Abstract: Crystallization kinetics of nylon 6 in the presence of poly (p-benzamide) (PBA) was investigated by using the Depolarized Light Intensity (DLI) technique.The experimental results of the crystallization isotherms show that n values, according to the Avrami's equation, are 3.3 for nylon 6 and 1.6, 1.7 for nylon 6 containing 1 and 2 wt% PBA, respectively.This indicates that the introduction of PBA into the nylon 6 matrix could change the type of nucleation and growth, while the PBA acts as nuclei.The results of DSCshow an increase in crystallinity of nylon 6 matrix with the increase of PBA contents.X-ray diffraction analysis of the crystalline nylon 6 in the presence of varying content of PBA was performed.Experimental data show that no changes of molecular unit cell structure occured.The PBA could just change the type of crystallization, and acts as nuclei.

Key words: Nylon 6, Poly(p-benzamide), Polymer nucleating agent, Crystallization, Depolarized light intensity technique

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LIN Jia-ping, WU He-rong, LI Shi-jin . Crystallization of Nylon 6 in the Presence of PBA[J]. Chem. J. Chinese Universities, 1992, 13(7): 990.

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Crystallization of Nylon 6 in the Presence of PBA

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