SOLUTION PROPERTIES OF LADDER-LIKE POLYMER POLYPHENYLSILSESQUIOXANES

SHI Lianghe; ZHANG Xinsheng; SI Yuandong; YE Meiling; LI Dingcai

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SOLUTION PROPERTIES OF LADDER-LIKE POLYMER POLYPHENYLSILSESQUIOXANES

Papers | Updated：2021-06-21

- SOLUTION PROPERTIES OF LADDER-LIKE POLYMER POLYPHENYLSILSESQUIOXANES
- SOLUTION PROPERTIES OF LADDER-LIKE POLYMER POLYPHENYLSILSESQUIOXANES
- 高分子科学（英文版） 1987年5卷第4期页码：359-365
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- 纸质出版：1987-12-20
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SHI Lianghe, ZHANG Xinsheng, SI Yuandong, 等. SOLUTION PROPERTIES OF LADDER-LIKE POLYMER POLYPHENYLSILSESQUIOXANES[J]. 高分子科学（英文版）, 1987,5(4):359-365.

SHI Lianghe, ZHANG Xinsheng, SI Yuandong, et al. SOLUTION PROPERTIES OF LADDER-LIKE POLYMER POLYPHENYLSILSESQUIOXANES[J]. 1987, 5(4): 359-365.
SHI Lianghe, ZHANG Xinsheng, SI Yuandong, 等. SOLUTION PROPERTIES OF LADDER-LIKE POLYMER POLYPHENYLSILSESQUIOXANES[J]. 高分子科学（英文版）, 1987,5(4):359-365. DOI：

SHI Lianghe, ZHANG Xinsheng, SI Yuandong, et al. SOLUTION PROPERTIES OF LADDER-LIKE POLYMER POLYPHENYLSILSESQUIOXANES[J]. 1987, 5(4): 359-365. DOI：

摘要

Solution properties of ladder-like polymer polyphenylsilsesquioxane (PPS) were studied by measurement of intrinsic viscosity

small angle laser light scattering and gel permeation chromatography. It was found that PPS can be modeled with a wormlike continuous cylinder rather than a wormlike coil. A plot of (M2/[η])1/3 vs. M1/2 was employed in obtaining the persistence length (2λ)-1 and effective hydrodynamic diameter. When MW≤5×105

Mark-Houwink equation is adequate in describing the relationship between MW and [η] with α about unity.This implies that PPS chain is semi-stiff.For GPC experiments

it was shown that univeral calibration can be applied in PPS.When molecular weights of PPS are sufficiently high

their molecular weight ditributions are often very broad.

Abstract

Solution properties of ladder-like polymer polyphenylsilsesquioxane (PPS) were studied by measurement of intrinsic viscosity

Mark-Houwink equation is adequate in describing the relationship between MW and [η] with α about unity.This implies that PPS chain is semi-stiff.For GPC experiments

it was shown that univeral calibration can be applied in PPS.When molecular weights of PPS are sufficiently high

their molecular weight ditributions are often very broad.

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