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Study on crystallization behaviour of co-polyamide 66 containing triaryl phosphine oxide

Content Provider	Springer Nature Link
Author	FENG, YANG XIAO LING, LI QIAO PING, CHEN ZHI FENG, YANG YONG LEI, ZHANG
Copyright Year	2012
Abstract	In this paper, the isothermal crystallization and non-isothermal crystallization behaviour of flame retardant co-polyamide 66 (FR-PA66) containing triaryl phosphine oxide (TPO) were researched by employing differential scanning calorimetry (DSC), polarized optical microscopy (POM), respectively. The effects of TPO groups on nucleation mechanism, nucleation pattern and crystallization rate of FR-PA66 were discussed in detail. Experimental results show that TPO unit does not nucleate first during crystallization process of FR-PA66. The nucleation mechanism and nucleation pattern of FR-PA66 do not virtually change with incorporation of TPO groups when compared with polyamide 66 (PA66). The mainly crystallization process of FR-PA66 is still free nucleation and growing during the prime crystallization stage, and is unimensional nucleation and growing during the second crystallization stage. But at the second crystallization stage, we think there is a para-crystal forming with the main-crystal unimensional nucleation and growing. In addition, incorporation of TPO groups result in the decrement of both nucleation rate and crystallization rate of FR-PA66, and the increment of crystallization activation energy. Hence the TPO groups were unfavourable for FR-PA66 crystallization. In addition, incorporation of TPO groups also result in the decrement of crystallization region of FR-PA66, and increment of spherulite defect.
Starting Page	233
Ending Page	242
Page Count	10
File Format	PDF
ISSN	02504707
Journal	Bulletin of Materials Science
Volume Number	35
Issue Number	2
e-ISSN	09737669
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-05-03
Publisher Institution	Indian Academy of Sciences
Publisher Place	India
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Triaryl phosphine oxide co-polyamide 66 crystallization behaviour nucleation mechanism Materials Science Engineering
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science

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