Toughening of Polycarbonate through Reactive Melt Blending: Effect of Hydroxyl Content and Viscosity of Hydroxyl-terminated Polydimethysiloxane

Shuang-mei Zhang; Hui-xian Zhang; Wei-yi Zhang; Zhi-qiang Wu; Feng Chen; Qiang Fu

doi:10.1007/s10118-014-1474-1

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Toughening of Polycarbonate through Reactive Melt Blending: Effect of Hydroxyl Content and Viscosity of Hydroxyl-terminated Polydimethysiloxane

Updated：2021-06-21

- Toughening of Polycarbonate through Reactive Melt Blending: Effect of Hydroxyl Content and Viscosity of Hydroxyl-terminated Polydimethysiloxane
- Chinese Journal of Polymer Science Vol. 32, Issue 7, Pages: 823-833(2014)
- Affiliations：
  
  a.College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
  b.State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai 200433, China
- Author bio：
  
  **Qiang Fu (傅强), E-mail: qiangfu@scu.edu.cn
- Funds：
- DOI：10.1007/s10118-014-1474-1
  CLC：
- Received：24 February 2014，
  
  Revised：2014-04-14，
  
  Accepted：21 April 2014，
  
  Published：2014-07
- Accepted：
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Shuang-mei Zhang, Hui-xian Zhang, Wei-yi Zhang, et al. Toughening of Polycarbonate through Reactive Melt Blending: Effect of Hydroxyl Content and Viscosity of Hydroxyl-terminated Polydimethysiloxane[J]. Chinese Journal of Polymer Science, 2014, 32(7): 823-833.
DOI：

Shuang-mei Zhang, Hui-xian Zhang, Wei-yi Zhang, et al. Toughening of Polycarbonate through Reactive Melt Blending: Effect of Hydroxyl Content and Viscosity of Hydroxyl-terminated Polydimethysiloxane[J]. Chinese Journal of Polymer Science, 2014, 32(7): 823-833. DOI： 10.1007/s10118-014-1474-1.

摘要

Abstract

In this study

four hydroxyl-terminated polydimethylsiloxanes (PDMSOH) with different viscosities and hydroxyl contents were used to improve the toughness of polycarbonate (PC) through reactive melt blending. A largely improved toughness of PC has been achieved

and the low temperature toughness of PC/PDMSOH blends could overtake that of PC homopolymer in much higher temperatures (

e.g.

−10 ℃ versus 23 ℃). Moreover

it was found that the more the hydroxyl content

the less the PDMSOH was needed to reach the highest toughness

suggesting that equivalent molar ratio between the carbonyl group content of PC and the hydroxyl group content of PDMSOH was required for the toughening of PC. Ultraviolet spectrophotometry was used to analyze the possible reaction between PC and PDMSOH. Contact angle was measured to assess the change of interfacial interaction between PC and PDMSOH as change of viscosity and hydroxyl content. The formation of PC-

-PDMSOH copolymer was believed to be the key for the toughening effect. This work gives

profound recommendation of the optimum kind and dosage of PDMSOH which should be used to improve the toughness of PC and will find immediate industrial applications.

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