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Poly (2,6-dimethyl-1,4-phenylene oxide) hollow fibres for gas separation.

机译：用于气体分离的聚（2,6-二甲基-1,4-苯撑氧）中空纤维。

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摘要

Hollow fibres used for gas separation applications need to have good mechanical strength and excellent gas separation properties. The production of hollow fibres by the dry-wet spinning process involves many variables, each having the potential to affect these properties.;This is a systematic study of the effect of several variables in the spinning process on the dimensions, morphology and CO2/CH 4 gas separation performance of poly(2,6-dimethyl 1,4-phenylene oxide) (PPO). Hollow fibres were prepared by the dry-wet spinning method from solutions of PPO in trichloroethylene using the non-solvent methanol as the bore liquid and for the gelation bath. The variables studied were the length of the air gap, the flowrates of the bore liquid and polymer solution and the presence of 2-ethyl-1-hexanol in the polymer solution used for spinning. A one-factor-at-a-time approach was used to show how these variables affected the outer diameter; wall thickness and carbon dioxide and methane permeate flux of the hollow fibres. A factorial design was used to determine which of the effects were significant and if there were any interactions between the variables that also affected the hollow fibre properties. The results were used to develop models for each of the five response variables as a function of those spinning variables that were found to significant.;The outer diameters of the fibres produced within the constraints of the factorial design ranged from 0.39--0.6 mm, and the wall thickness from 0.018--0.045 mm. The outer diameter of the fibres was found to decrease with increasing air gap, decreasing polymer solution flowrate and decreasing bore liquid flowrate. The wall thickness was found to increase with increasing polymer solution flowrate, and decreasing bore liquid flowrate. The interaction between the presence of 2-ethyl-1-hexanol and the bore liquid flowrate had a significant effect on the hollow fibre wall thickness. None of the interactions between the other variables were found to have a significant effect on the hollow fibre dimensions.;The methane permeate flux for the hollow fibres produced within the constraints of the factorial design ranged from 1.52 x 10-11--4.8 x 10-11 mol/m2.s.Pa, and the carbon dioxide permeate flux from 3.52 x 10-10--1.25 x 10-9 mol/m2.s.Pa. (Abstract shortened by UMI.)
机译：用于气体分离应用的中空纤维需要具有良好的机械强度和出色的气体分离性能。通过干湿纺丝工艺生产中空纤维涉及许多变量，每个变量都有可能影响这些特性。;这是对纺丝过程中多个变量对尺寸，形态和CO2 / CH影响的系统研究4聚（2,6-二甲基1,4-苯撑氧）（PPO）的气体分离性能。中空纤维是通过干湿纺丝法，由PPO在三氯乙烯中的溶液制备而成的，其中使用非溶剂甲醇作为孔液并用于凝胶浴。研究的变量是气隙的长度，膛孔液体和聚合物溶液的流速以及用于纺丝的聚合物溶液中2-乙基-1-己醇的存在。一次采用单因素方法来显示这些变量如何影响外径。壁厚以及中空纤维的二氧化碳和甲烷渗透通量。使用阶乘设计来确定哪些影响是显着的，以及变量之间是否存在任何也影响中空纤维性能的相互作用。结果被用来开发五个响应变量中的每个变量的模型，这些变量是发现显着的纺纱变量的函数;在析因设计约束范围内生产的纤维的外径范围为0.39--0.6 mm，壁厚为0.018--0.045毫米发现纤维的外径随着气隙的增加，聚合物溶液流量的减少和孔液流量的减少而减小。发现壁厚随聚合物溶液流量的增加而增加，而镗孔液体流量的减少而增加。 2-乙基-1-己醇的存在与孔液流速之间的相互作用对中空纤维壁厚有显着影响。没有发现其他变量之间的相互作用对中空纤维的尺寸有显着影响。;在析因设计的约束范围内生产的中空纤维的甲烷渗透通量为1.52 x 10-11--4.8 x 10 -11 mol / m2.s.Pa。，二氧化碳渗透通量为3.52 x 10-10--1.25 x 10-9 mol / m2.s.Pa.。 （摘要由UMI缩短。）

著录项

  • 作者

    Wood, Mandy.;

  • 作者单位

    University of Ottawa (Canada).;

  • 授予单位 University of Ottawa (Canada).;
  • 学科 Engineering Chemical.
  • 学位 Ph.D.
  • 年度 2002
  • 页码 188 p.
  • 总页数 188
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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