Thermal-oxidative aging kinetics of montmorillonite/polypropylene nanocomposites

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	Thermal-oxidative aging kinetics of montmorillonite/polypropylene nanocomposites
	Yang, Ruicheng; Wu, Liang; Niu, Shaorui; Ma, Jianzhong
刊名	Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica
	2010-12-01
卷号	27 期号:6 页码:70-75
关键词	Activation energy Clay minerals Crystallinity Decomposition Enzyme kinetics Fourier transform infrared spectroscopy Kinetics Nanocomposites Polypropylenes Chemical interactions First-order kinetics equation Mechanical protection Melt intercalation method OMMT Thermal decomposition temperature Thermal oxidative aging Vibration absorption
ISSN号	10003851
英文摘要	Organ montmorillonite (OMMT1)/polypropylene (PP) nanocomposites were prepared by the melt intercalation method. After thermal-oxidative aging for 0~12 d at the temperature of 100°C, 110°C and 120°C, the thermal property, thermal stability, the attenuation of tensile strength and kinetics were studied. The results of TG, DSC and FTIR show that, compared with PP, the thermal decomposition temperature of OMMT1/PP increases by 37°C, the crystallinity increases from 51% to 71%, and there is stronger interaction between nano-OMMT lamellar and PP. So C=O vibration absorption peaks of OMMT1/PP weaken significantly in FTIR spectra and surface cracks slightly during thermal-oxidative aging. After aging at 100~120°C, strength retention of OMMT1/PP is much superior to pure polypropylene material (8~22 times), and its tensile strength was 54% after 12 d aging at 110°C. The first-order kinetics equation of OMMT1/PP thermal-oxidative aging was established with tensile strength as parameter, its activation energy was 52.3 kJ/mol (1.7 times of PP). The higher the activation energy values and excellent resistance to thermal-oxidative aging of OMMT1/PP can be contributed to the mechanical protection of exfoliated nano-MMT lamella, physical barrier effect to PP and the chemical interaction between MMT and PP.
语种	中文
出版者	Beijing University of Aeronautics and Astronautics (BUAA)
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/111134]
专题	省部共建有色金属先进加工与再利用国家重点实验室生命科学与工程学院
作者单位	State Key Laboratory of Gansu Advanced Non-Ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China
推荐引用方式 GB/T 7714	Yang, Ruicheng,Wu, Liang,Niu, Shaorui,et al. Thermal-oxidative aging kinetics of montmorillonite/polypropylene nanocomposites[J]. Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica,2010,27(6):70-75.
APA	Yang, Ruicheng,Wu, Liang,Niu, Shaorui,&Ma, Jianzhong.(2010).Thermal-oxidative aging kinetics of montmorillonite/polypropylene nanocomposites.Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica,27(6),70-75.
MLA	Yang, Ruicheng,et al."Thermal-oxidative aging kinetics of montmorillonite/polypropylene nanocomposites".Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica 27.6(2010):70-75.