Citation: Zhe Wang a, b, Rong-jun Song a, c, Xiao-hua Du a, b, Xiao-yu Meng a, b, Zhi-wei Jiang a, Tao Tang a. STRUCTURAL EVOLUTION AND COMPOSITION CHANGE IN THE SURFACE REGION OF POLYPROPYLENE/CLAY NANOCOMPOSITES ANNEALED AT HIGH TEMPERATURES[J]. Chinese Journal of Polymer Science, ;2009, 27(6): 879-888. shu

STRUCTURAL EVOLUTION AND COMPOSITION CHANGE IN THE SURFACE REGION OF POLYPROPYLENE/CLAY NANOCOMPOSITES ANNEALED AT HIGH TEMPERATURES

Received Date: 17 October 2008
Revised Date: 4 December 2008

A model experiment was done to clear the formation mechanism of protective layers during combustion of polypropylene (PP)/organically modified montmorillonite (OMMT) nanocomposites. The investigation was focused on the effects of annealing temperature on the structural changes and protective layer formation. The decomposition of OMMT and degradation of PP/OMMT nanocomposites were characterized by means of thermogravimetric analysis (TGA). The structural evolution and composition change in the surface region of PP/OMMT nanocomposites during heating were monitored by means of X-ray photoelectron spectroscopy (XPS), ATR-FTIR and field emission scanning electron microscopy (FESEM). The results showed that the formation of the carbonaceous silicate barrier in the surface region of PP/OMMT nanocomposites resulted from the following three processes: (1) The formation of strong acid sites on the MMT sheets, which could promote the degradation of PP and the carbonization of its degradation products; (2) The gases and gas bubbles formed by decomposition of the surfactant and degradation of PP, which pushed the molten sample to the surface; (3) The degradation of PP and the carbonization of the degradation products, which led to accumulation of MMT sheets tightly linked by the char in the surface region.
1. [1]
  Lian Sun , Honglei Wang , Ming Ma , Tingting Cao , Leilei Zhang , Xingui Zhou . Shape and composition evolution of Pt and Pt₃M nanocrystals under HCl chemical etching. Chinese Chemical Letters, 2024, 35(9): 109188-. doi: 10.1016/j.cclet.2023.109188
2. [2]
  Jingqi Xin , Shupeng Han , Meichen Zheng , Chenfeng Xu , Zhongxi Huang , Bin Wang , Changmin Yu , Feifei An , Yu Ren . A nitroreductase-responsive nanoprobe with homogeneous composition and high loading for preoperative non-invasive tumor imaging and intraoperative guidance. Chinese Chemical Letters, 2024, 35(7): 109165-. doi: 10.1016/j.cclet.2023.109165
3. [3]
  Li Li , Fanpeng Chen , Bohang Zhao , Yifu Yu . Understanding of the structural evolution of catalysts and identification of active species during CO₂ conversion. Chinese Chemical Letters, 2024, 35(4): 109240-. doi: 10.1016/j.cclet.2023.109240
4. [4]
  Mengjun Zhao , Yuhao Guo , Na Li , Tingjiang Yan . Deciphering the structural evolution and real active ingredients of iron oxides in photocatalytic CO2 hydrogenation. Chinese Journal of Structural Chemistry, 2024, 43(8): 100348-100348. doi: 10.1016/j.cjsc.2024.100348
5. [5]
  Ling Tang , Yan Wan , Yangming Lin . Lowering the kinetic barrier via enhancing electrophilicity of surface oxygen to boost acidic oxygen evolution reaction. Chinese Journal of Structural Chemistry, 2024, 43(11): 100345-100345. doi: 10.1016/j.cjsc.2024.100345
6. [6]
  Yijia Jiao , Yuzhu Li , Yuting Zhou , Peipei Cen , Yi Ding , Yan Guo , Xiangyu Liu . Structural evolution and zero-field SMM behaviour in ferromagnetically-coupled disk-type Co₇ clusters bearing exclusively end-on azido bridges. Chinese Chemical Letters, 2024, 35(8): 109082-. doi: 10.1016/j.cclet.2023.109082
7. [7]
  Chaochao Wei , Ru Wang , Zhongkai Wu , Qiyue Luo , Ziling Jiang , Liang Ming , Jie Yang , Liping Wang , Chuang Yu . Revealing the size effect of FeS₂ on solid-state battery performances at different operating temperatures. Chinese Chemical Letters, 2024, 35(6): 108717-. doi: 10.1016/j.cclet.2023.108717
8. [8]
  Hui Gu , Mingyue Gao , Kuan Shen , Tianli Zhang , Junhao Zhang , Xiangjun Zheng , Xingmei Guo , Yuanjun Liu , Fu Cao , Hongxing Gu , Qinghong Kong , Shenglin Xiong . F127 assisted fabrication of Ge/rGO/CNTs nanocomposites with three-dimensional network structure for efficient lithium storage. Chinese Chemical Letters, 2024, 35(9): 109273-. doi: 10.1016/j.cclet.2023.109273
9. [9]
  Yin-Hang Chai , Li-Long Dang . New structural breakthrough and topological transformation of homogeneous metalla[4]catenane compounds. Chinese Journal of Structural Chemistry, 2024, 43(10): 100322-100322. doi: 10.1016/j.cjsc.2024.100322
10. [10]
  Zhiwei Zhong , Yanbin Huang , Wantai Yang . A simple photochemical method for surface fluorination using perfluoroketones. Chinese Chemical Letters, 2024, 35(5): 109339-. doi: 10.1016/j.cclet.2023.109339
11. [11]
  Yukai Tong , Zhijun Wu , Bo Zhou , Min Hu , Anpei Ye . Surface tension of single suspended aerosol microdroplets. Chinese Chemical Letters, 2024, 35(4): 109062-. doi: 10.1016/j.cclet.2023.109062
12. [12]
  Yu He , Hao Jiang , Shaoxuan Yuan , Jiayi Lu , Qiang Sun . On-surface photo-induced dechlorination. Chinese Chemical Letters, 2024, 35(9): 109807-. doi: 10.1016/j.cclet.2024.109807
13. [13]
  Jingxuan Liu , Shiqi Zhao , Xiang Wu . Flexible electrochemical capacitor based NiMoSSe electrode material with superior cycling and structural stability. Chinese Chemical Letters, 2024, 35(7): 109059-. doi: 10.1016/j.cclet.2023.109059
14. [14]
  Jianmei Han , Peng Wang , Hua Zhang , Ning Song , Xuguang An , Baojuan Xi , Shenglin Xiong . Performance optimization of chalcogenide catalytic materials in lithium-sulfur batteries: Structural and electronic engineering. Chinese Chemical Letters, 2024, 35(7): 109543-. doi: 10.1016/j.cclet.2024.109543
15. [15]
  Jie Ren , Hao Zong , Yaqun Han , Tianyi Liu , Shufen Zhang , Qiang Xu , Suli Wu . Visual identification of silver ornament by the structural color based on Mie scattering of ZnO spheres. Chinese Chemical Letters, 2024, 35(9): 109350-. doi: 10.1016/j.cclet.2023.109350
16. [16]
  Zhi-Yuan Yue , Hua-Kai Li , Na Wang , Shan-Shan Liu , Le-Ping Miao , Heng-Yun Ye , Chao Shi . Dehydration-triggered structural phase transition-associated ferroelectricity in a hybrid perovskite-type crystal. Chinese Chemical Letters, 2024, 35(10): 109355-. doi: 10.1016/j.cclet.2023.109355
17. [17]
  Xianxu Chu , Lu Wang , Junru Li , Hui Xu . Surface chemical microenvironment engineering of catalysts by organic molecules for boosting electrocatalytic reaction. Chinese Chemical Letters, 2024, 35(8): 109105-. doi: 10.1016/j.cclet.2023.109105
18. [18]
  Ce Liang , Qiuhui Sun , Adel Al-Salihy , Mengxin Chen , Ping Xu . Recent advances in crystal phase induced surface-enhanced Raman scattering. Chinese Chemical Letters, 2024, 35(9): 109306-. doi: 10.1016/j.cclet.2023.109306
19. [19]
  Wenhao Chen , Jian Du , Hanbin Zhang , Hancheng Wang , Kaicheng Xu , Zhujun Gao , Jiaming Tong , Jin Wang , Junjun Xue , Ting Zhi , Longlu Wang . Surface treatment of GaN nanowires for enhanced photoelectrochemical water-splitting. Chinese Chemical Letters, 2024, 35(9): 109168-. doi: 10.1016/j.cclet.2023.109168
20. [20]
  Guoliang Liu , Zhiqiang Liu , Anmin Zheng . Modulation of zeolite surface realizes dynamic copper species redispersion. Chinese Journal of Structural Chemistry, 2024, 43(6): 100308-100308. doi: 10.1016/j.cjsc.2024.100308

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(449)
HTML views(11)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return