Citation: Jin Yan, Li-li Su, Ming Zhang, Guo-zhang Wu. Degradation and Stabilization of Polycarbonate during High Temperature Shearing[J]. Acta Polymerica Sinica, ;2018, (4): 499-506. doi: 10.11777/j.issn1000-3304.2017.17114 shu

Degradation and Stabilization of Polycarbonate during High Temperature Shearing

Shanghai Key Laboratory of Advanced Polymeric Material, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237

Corresponding author: Guo-zhang Wu, wgz@ecust.edu.cn
Received Date: 27 April 2017
Revised Date: 5 May 2017

The thermal degradation behavior of bisphenol A polycarbonate (BPA-PC) during high temperature shear mixing was investigated. The effects of different antioxidant systems on improving the thermal stability of PC were compared by using a combination of spectrodensitometer, universal tensile testing machine and Ubbelohde viscometer, while the structural transformation of PC during the degradation process was studied by Fourier transform infrared spectrometer (FTIR) and nuclear magnetic resonance spectroscopy (¹H-NMR) analysis. The results show that the addition of phosphite antioxidant and complex antioxidant can greatly improve the thermal stability and delay the extent of reduction of molecular weight as well as mechanical properties during the degradation process. Phosphite antioxidant can effectively enhance the color stability of PC by inhibiting the scission of carbonate linkage. Hindered phenolic antioxidant has opposite effects on the thermal stabilization of carbonate bonds and isopropylidene bonds in PC molecular chains. The phenolic hydroxyl groups of hindered phenolic antioxidant result in chain scission that is against the thermal stability of carbonate bond. Furthermore, hindered phenolic antioxidant contributes to the thermal stabilization of isopropylidene bond, which is superior to phosphite antioxidant. Multiple hindered phenolic antioxidant appears more outstanding thermostability to isopropylidene bonds, and the combination with phosphite can decrease the degradation of carbonate bond, which results in an excellent antioxidant effect. In addition, the effects of different degradation products on discoloration were discussed. It is found that chromophore is not derived from chains terminated with acetophenone. However, the yellow index of PC is proportional to the relative amount of chains terminated with phenolic hydroxyl, and the degree of color deterioration is also correlated with the infrared peak intensity of aliphatic ketone and aromatic ketone. Therefore, ketones could be the main degradation products that cause PC yellowing, while the carbonyl conjugated structure in the molecular chain is the main chromophore.
- Polycarbonate,
- Thermal degradation,
- Yellowing,
- Antioxidant
1. [1]
  Zhang Xinlan, Zhang Qin, Fu Qiang, Zhou Nan. Chin Plast Ind, 2008, 36:1-4
2. [2]
  Diepens M, Gijsman P. Polym Degrad Stab, 2007, 92:397-406 doi: 10.1016/j.polymdegradstab.2006.12.003
3. [3]
  Hagenaars A C, Goddrie W J, Bailly C. Polymer, 2002, 43:5043-5049 doi: 10.1016/S0032-3861(02)00324-5
4. [4]
  Gao W, Han S, Yang M, Jang L, Dan Y. Polym Degrad Stab, 2009, 94:13-17 doi: 10.1016/j.polymdegradstab.2008.10.015
5. [5]
  Oba K, Ishida Y, Ito Y, Ohtani H, Tsuge S. Macromolecules, 2000, 33:8173-8183 doi: 10.1021/ma000596a
6. [6]
  Jang B N, Wilkie C A. Polym Degrad Stab, 2004, 86:419-430 doi: 10.1016/j.polymdegradstab.2004.05.009
7. [7]
  Jang B N, Wilkie C A. Thermochim Acta, 2005, 426:73-84 doi: 10.1016/j.tca.2004.07.023
8. [8]
  Zhang Wei, Gao Xia, Wang Zhaohui, Jiang Xiaoyan, Xu Hua. Acta Polymerica Sinica, 2009, (12):1282-1286 doi: 10.3321/j.issn:1000-3304.2009.12.016
9. [9]
  Puglisi C, Samperi F, Carroccio S, Montaudo G. Macromolecules, 1999, 32:8821-8828 doi: 10.1021/ma9912148
10. [10]
  Carroccio S, Puglisi C, Montaudo G. Macromolecules, 2002, 35:4297-4305 doi: 10.1021/ma012077t
11. [11]
  Lee L H. J Polym Sci, Part A:Polym Chem, 1964, 2:2859-2873
12. [12]
  Godinez C, Rios A P, Hernandez-Fernandez F J, Lozano L J, Baraza X, Mardomingo E. J Appl Polym Sci, 2011, 119:1348-1356 doi: 10.1002/app.v119:3
13. [13]
  Sun Teng, Yang Xiangui, Li Jianguo, Liu Shaoying, Zeng Yi, Wang Gongying. Chin J Synth Chem, 2014, 22:558-561 doi: 10.3969/j.issn.1005-1511.2014.04.034
14. [14]
  Diepens M, Gijsman P. Polym Degrad Stab, 2010, 95:811-817 doi: 10.1016/j.polymdegradstab.2010.02.005
15. [15]
  Vulic I, Vitarelli G, Zenner J M. Polym Degrad Stab, 2002, 78:27-34 doi: 10.1016/S0141-3910(02)00115-5
16. [16]
  Zhao Hemeng, Jiang Meijia, Tian Hengshui. Acta Polymerica Sinica, 2011, (10):192-197
17. [17]
  Baick I H, Ye Y, Luciani C V, Ahn Y G, Song K H, Choi K Y. Ind Eng Chem Res, 2013, 52:17419-17431 doi: 10.1021/ie4029544
18. [18]
  Baick I H, Yang W J, Ahn Y G, Song K H, Choi K Y. J Appl Polym Sci, 2015, 132:41609
19. [19]
  Li X H, Meng Y Z, Zhu Q, Tjong S C. Polym Degrad Stab, 2003, 81:157-165 doi: 10.1016/S0141-3910(03)00085-5
20. [20]
  Rivation A, Mailhot B, Soulestin J, Varghese H, Gardette J L. Polym Degrad Stab, 2002, 75:17-33 doi: 10.1016/S0141-3910(01)00201-4
1. [1]
  Yu Peng , Jiawei Chen , Yue Yin , Yongjie Cao , Mochou Liao , Congxiao Wang , Xiaoli Dong , Yongyao Xia . 无碳酸乙烯酯电解液定向构筑正极电解质界面相实现高电压钴酸锂的宽温域稳定运行. Acta Physico-Chimica Sinica, 2025, 41(8): 100087-. doi: 10.1016/j.actphy.2025.100087
2. [2]
  Xiyuan Su , Zhenlin Hu , Ye Fan , Xianyuan Liu , Xianyong Lu . Change as You Want: Multi-Responsive Superhydrophobic Intelligent Actuation Material. University Chemistry, 2024, 39(5): 228-237. doi: 10.3866/PKU.DXHX202311059
3. [3]
  Lili Wang , Chunxia Chen , Lina Jia , Li Guo , Jingjing Cao . Exploration and Practice in Innovative and Interesting Scientific Research Skills Training for Wood Magnetization. University Chemistry, 2024, 39(6): 246-252. doi: 10.3866/PKU.DXHX202310088
4. [4]
  Hong Zheng , Xin Peng , Chunwang Yi . The Tale of Caprolactam Cyclic Oligomers: The Ever-changing Life of “Princess Cyclo”. University Chemistry, 2024, 39(9): 40-47. doi: 10.12461/PKU.DXHX202403058
5. [5]
  Zhuo WANG , Junshan ZHANG , Shaoyan YANG , Lingyan ZHOU , Yedi LI , Yuanpei LAN . Preparation and photocatalytic performance of CeO₂-reduced graphene oxide by thermal decomposition. Chinese Journal of Inorganic Chemistry, 2024, 40(9): 1708-1718. doi: 10.11862/CJIC.20240067
6. [6]
  Yang Lv , Yingping Jia , Yanhua Li , Hexiang Zhong , Xinping Wang . Integrating the Ideological Elements with the “Chemical Reaction Heat” Teaching. University Chemistry, 2024, 39(11): 44-51. doi: 10.12461/PKU.DXHX202402059
7. [7]
  Limei CHEN , Mengfei ZHAO , Lin CHEN , Ding LI , Wei LI , Weiye HAN , Hongbin WANG . Preparation and performance of paraffin/alkali modified diatomite/expanded graphite composite phase change thermal storage material. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 533-543. doi: 10.11862/CJIC.20230312
8. [8]
  Yahui HAN , Jinjin ZHAO , Ning REN , Jianjun ZHANG . Synthesis, crystal structure, thermal decomposition mechanism, and fluorescence properties of benzoic acid and 4-hydroxy-2, 2′: 6′, 2″-terpyridine lanthanide complexes. Chinese Journal of Inorganic Chemistry, 2025, 41(5): 969-982. doi: 10.11862/CJIC.20240395
9. [9]
  Zizheng LU , Wanyi SU , Qin SHI , Honghui PAN , Chuanqi ZHAO , Chengfeng HUANG , Jinguo PENG . Surface state behavior of W doped BiVO₄ photoanode for ciprofloxacin degradation. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 591-600. doi: 10.11862/CJIC.20230225
10. [10]
  Lijun Zhou , Dongmei Wang , Jiameng Wang , Tongjie Yao , Mei Qi , Yin Kong , Yan Song . Teaching Case Design of “Degradation and Aging” as an Ideological and Political Demonstration Course. University Chemistry, 2025, 40(4): 80-86. doi: 10.12461/PKU.DXHX202405113
11. [11]
  Xia ZHANG , Yushi BAI , Xi CHANG , Han ZHANG , Haoyu ZHANG , Liman PENG , Shushu HUANG . Preparation and photocatalytic degradation performance of rhodamine B of BiOCl/polyaniline. Chinese Journal of Inorganic Chemistry, 2025, 41(5): 913-922. doi: 10.11862/CJIC.20240255
12. [12]
  Qiang ZHAO , Zhinan GUO , Shuying LI , Junli WANG , Zuopeng LI , Zhifang JIA , Kewei WANG , Yong GUO . Cu₂O/Bi₂MoO₆ Z-type heterojunction: Construction and photocatalytic degradation properties. Chinese Journal of Inorganic Chemistry, 2024, 40(5): 885-894. doi: 10.11862/CJIC.20230435
13. [13]
  Guangming YIN , Huaiyao WANG , Jianhua ZHENG , Xinyue DONG , Jian LI , Yi'nan SUN , Yiming GAO , Bingbing WANG . Preparation and photocatalytic degradation performance of Ag/protonated g-C₃N₄ nanorod materials. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1491-1500. doi: 10.11862/CJIC.20240086
14. [14]
  Yujia LI , Tianyu WANG , Fuxue WANG , Chongchen WANG . Direct Z-scheme MIL-100(Fe)/BiOBr heterojunctions: Construction and photo-Fenton degradation for sulfamethoxazole. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 481-495. doi: 10.11862/CJIC.20230314
15. [15]
  Bing LIU , Huang ZHANG , Hongliang HAN , Changwen HU , Yinglei ZHANG . Visible light degradation of methylene blue from water by triangle Au@TiO₂ mesoporous catalyst. Chinese Journal of Inorganic Chemistry, 2024, 40(5): 941-952. doi: 10.11862/CJIC.20230398
16. [16]
  Jianjun LI , Mingjie REN , Lili ZHANG , Lingling ZENG , Huiling WANG , Xiangwu MENG . UV-assisted degradation of tetracycline hydrochloride by MnFe₂O₄@activated carbon activated persulfate. Chinese Journal of Inorganic Chemistry, 2024, 40(10): 1869-1880. doi: 10.11862/CJIC.20240187
17. [17]
  Shijie Li , Ke Rong , Xiaoqin Wang , Chuqi Shen , Fang Yang , Qinghong Zhang . Design of Carbon Quantum Dots/CdS/Ta₃N₅ S-Scheme Heterojunction Nanofibers for Efficient Photocatalytic Antibiotic Removal. Acta Physico-Chimica Sinica, 2024, 40(12): 2403005-. doi: 10.3866/PKU.WHXB202403005
18. [18]
  Hongbo Zhang , Yihong Tang , Suxia Zhang , Yuanting Li . Electrochemical Monitoring of Photocatalytic Degradation of Phenol Pollutants: A Recommended Comprehensive Analytical Chemistry Experiment. University Chemistry, 2024, 39(6): 326-333. doi: 10.3866/PKU.DXHX202310013
19. [19]
  Lijuan Liu , Xionglei Wang . Preparation of Hydrogels from Waste Thermosetting Unsaturated Polyester Resin by Controllable Catalytic Degradation: A Comprehensive Chemical Experiment. University Chemistry, 2024, 39(11): 313-318. doi: 10.12461/PKU.DXHX202403060
20. [20]
  Yingqi BAI , Hua ZHAO , Huipeng LI , Xinran REN , Jun LI . Perovskite LaCoO₃/g-C₃N₄ heterojunction: Construction and photocatalytic degradation properties. Chinese Journal of Inorganic Chemistry, 2025, 41(3): 480-490. doi: 10.11862/CJIC.20240259

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(208)
HTML views(17)

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