Degradation and Stabilization of Polycarbonate during High Temperature Shearing

Jin Yan; Li-li Su; Ming Zhang; Guo-zhang Wu

doi:10.11777/j.issn1000-3304.2017.17114

您当前的位置：

首页 >

文章列表页 >

Degradation and Stabilization of Polycarbonate during High Temperature Shearing

Research Article | 更新时间：2021-01-26

- Degradation and Stabilization of Polycarbonate during High Temperature Shearing
- Acta Polymerica Sinica Issue 4, Pages: 499-506(2018)
- 作者机构：
  
  华东理工大学材料科学与工程学院上海市先进聚合物重点实验室上海 200237
- 作者简介：
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2017.17114
  CLC：
- Published：20 April 2018，
  
  Received：27 April 2017，
  
  Revised：5 May 2017，
扫描看全文
Jin Yan, Li-li Su, Ming Zhang, Guo-zhang Wu. Degradation and Stabilization of Polycarbonate during High Temperature Shearing. [J]. Acta Polymerica Sinica (4):499-506(2018)
DOI：

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

摘要

借助傅里叶红外光谱和核磁共振氢谱等分析手段研究了双酚A聚碳酸酯（BPA-PC）在高温剪切混炼过程中的热降解行为，考察了不同抗氧剂对提高PC热稳定性的作用，探讨了PC的热降解黄变机理.结果表明，亚磷酸酯抗氧剂通过抑制碳酸酯键的断链反应，能有效提高PC的色泽稳定性.受阻酚抗氧剂上的酚羟基不利于碳酸酯键的热稳定，易导致其发生断链反应，但却有助于异亚丙基键的热稳定化.此外，探讨了不同降解产物对PC色泽的影响，对比发现，酮类降解产物上的羰基共轭结构可能是引发PC黄变的主要发色基团.

Abstract

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 (

H-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.

关键词

聚碳酸酯热降解黄变抗氧剂

Keywords

PolycarbonateThermal degradationYellowingAntioxidant

references

Xinlan Zhang , Qin Zhang , Qiang Fu , Nan Zhou . Chin Plast Ind , 2008 . 36 1 - 4 . http://www.cqvip.com/QK/92278X/200809/28205922.html.

张新兰 , 张琴 , 傅强 , 周楠 . 塑料工业 , 2008 . 36 1 - 4 . http://www.cqvip.com/QK/92278X/200809/28205922.html.

M Diepens , P Gijsman . Polym Degrad Stab , 2007 . 92 397 - 406 . DOI:10.1016/j.polymdegradstab.2006.12.003http://doi.org/10.1016/j.polymdegradstab.2006.12.003.

A C Hagenaars , W J Goddrie , C Bailly . Polymer , 2002 . 43 5043 - 5049 . DOI:10.1016/S0032-3861(02)00324-5http://doi.org/10.1016/S0032-3861(02)00324-5.

W Gao , S Han , M Yang , L Jang , Y Dan . Polym Degrad Stab , 2009 . 94 13 - 17 . DOI:10.1016/j.polymdegradstab.2008.10.015http://doi.org/10.1016/j.polymdegradstab.2008.10.015.

K Oba , Y Ishida , Y Ito , H Ohtani , S Tsuge . Macromolecules , 2000 . 33 8173 - 8183 . DOI:10.1021/ma000596ahttp://doi.org/10.1021/ma000596a.

B N Jang , C A Wilkie . Polym Degrad Stab , 2004 . 86 419 - 430 . DOI:10.1016/j.polymdegradstab.2004.05.009http://doi.org/10.1016/j.polymdegradstab.2004.05.009.

B N Jang , C A Wilkie . Thermochim Acta , 2005 . 426 73 - 84 . DOI:10.1016/j.tca.2004.07.023http://doi.org/10.1016/j.tca.2004.07.023.

Wei Zhang , Xia Gao , Zhaohui Wang , Xiaoyan Jiang , Hua Xu . Acta Polymerica Sinica , 2009 . ( 12 ): 1282 - 1286 . DOI:10.3321/j.issn:1000-3304.2009.12.016http://doi.org/10.3321/j.issn:1000-3304.2009.12.016http://www.gfzxb.org/article/doi/10.3724/SP.J.1105.2009.01282.

张巍 , 高峡 , 王朝晖 , 姜晓妍 , 许华 .高分子学报 , 2009 . ( 12 ): 1282 - 1286 . DOI:10.3321/j.issn:1000-3304.2009.12.016http://doi.org/10.3321/j.issn:1000-3304.2009.12.016http://www.gfzxb.org/article/doi/10.3724/SP.J.1105.2009.01282.

C Puglisi , F Samperi , S Carroccio , G Montaudo . Macromolecules , 1999 . 32 8821 - 8828 . DOI:10.1021/ma9912148http://doi.org/10.1021/ma9912148.

S Carroccio , C Puglisi , G Montaudo . Macromolecules , 2002 . 35 4297 - 4305 . DOI:10.1021/ma012077thttp://doi.org/10.1021/ma012077t.

L H Lee . J Polym Sci, Part A:Polym Chem , 1964 . 2 2859 - 2873.

C Godinez , A P Rios , F J Hernandez-Fernandez , L J Lozano , X Baraza , E Mardomingo . J Appl Polym Sci , 2011 . 119 1348 - 1356 . DOI:10.1002/app.v119:3http://doi.org/10.1002/app.v119:3.

Teng Sun , Xiangui Yang , Jianguo Li , Shaoying Liu , Yi Zeng ,Gongying Wang . Chin J Synth Chem , 2014 . 22 558 - 561 . DOI:10.3969/j.issn.1005-1511.2014.04.034http://doi.org/10.3969/j.issn.1005-1511.2014.04.034.

孙腾 , 杨先贵 , 李建国 , 刘绍英 , 曾毅 , 王公应 . 合成化学 , 2014 . 22 558 - 561 . DOI:10.3969/j.issn.1005-1511.2014.04.034http://doi.org/10.3969/j.issn.1005-1511.2014.04.034.

M Diepens , P Gijsman . Polym Degrad Stab , 2010 . 95 811 - 817 . DOI:10.1016/j.polymdegradstab.2010.02.005http://doi.org/10.1016/j.polymdegradstab.2010.02.005.

I Vulic , G Vitarelli , J M Zenner . Polym Degrad Stab , 2002 . 78 27 - 34 . DOI:10.1016/S0141-3910(02)00115-5http://doi.org/10.1016/S0141-3910(02)00115-5.

Hemeng Zhao , Meijia Jiang , Hengshui Tian . Acta Polymerica Sinica , 2011 . ( 10 ): 192 - 197 . http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gfzxb201102011.

赵贺猛 , 姜美佳 , 田恒水 . 高分子学报 , 2011 . ( 10 ): 192 - 197 . http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gfzxb201102011.

I H Baick , Y Ye , C V Luciani , Y G Ahn , K H Song , K Y Choi . Ind Eng Chem Res , 2013 . 52 17419 - 17431 . DOI:10.1021/ie4029544http://doi.org/10.1021/ie4029544.

I H Baick , W J Yang , Y G Ahn , K H Song , K Y Choi . J Appl Polym Sci , 2015 . 132 41609 http://terpconnect.umd.edu/~choi/index_files/Page763.htm.

X H Li , Y Z Meng , Q Zhu , S C Tjong . Polym Degrad Stab , 2003 . 81 157 - 165 . DOI:10.1016/S0141-3910(03)00085-5http://doi.org/10.1016/S0141-3910(03)00085-5.

A Rivation , B Mailhot , J Soulestin , H Varghese , J L Gardette . Polym Degrad Stab , 2002 . 75 17 - 33 . DOI:10.1016/S0141-3910(01)00201-4http://doi.org/10.1016/S0141-3910(01)00201-4.

更多指标>

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Organocatalytic Alternating Copolymerization of CO₂/Epoxide/Anhydride for Synthesis of Polycarbonate/Polyester Copolymers

Synthesis and Property of Eugenol-based Bisphenols and Poly(thioether carbonate)s

Synthesis, Structure and Properties of Isobutylene Oxide-CO₂ Copolymer

Synthesis and Microstructure Analysis of Stereoregular Poly(1,4-cyclohexadiene carbonate) Oligomers

Fabrication of a La-based Metal Organic Framework and Its Effect on Fire Safety and Thermal Stability of Polycarbonate

Related Author

No data

Related Institution

Collgene of Chemical Engineering, Qingdao University of Science and Technology

Key Laboratory of Biobased Polymer Materials, Shandong Provincial Education Department, College of Polymer Science and Engineering, Qingdao University of Science and Technology

Department of Polymeric Materials and Engineering, College of Materials & Metallurgy, Guizhou University

Shandong Shida Shenghua Chemical Group Co. Ltd.

China Center of Chemistry for Frontier Technologies, Zhejiang University

Postal code：100190
Tel：010-62588927 Email：gfzxb@iccas.ac.cn
Technical support is provided by Beijing Founder electronics co., LTD 京ICP备05002797号-8 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰