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Vortex fluidic mediated synthesis of polysulfone

机译：涡流流体介导的聚砜合成

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摘要

Polysulfone (PSF) was prepared under high shear in a vortex fluidic device (VFD) operating in confined mode, and its properties compared with that prepared using batch processing. This involved reacting the pre-prepared disodium salt of bisphenol A (BPA) with a 4,4 '-dihalodiphenylsulfone under anhydrous conditions. Scanning electron microscopy (SEM) established that in the thin film microfluidic platform, the PSF particles are sheet-like, for short reaction times, and fibrous for long reaction times, in contrast to spherical like particles for the polymer prepared using the conventional batch synthesis. The operating parameters of the VFD (rotational speed of the glass tube, its tilt angle and temperature) were systematically varied for establishing their effect on the molecular weight (M-w), glass transition temperature (T-g) and decomposition temperature, featuring gel permeation chromatography (GPC), differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA) respectively. The optimal VFD prepared PSF was obtained at 6000 rpm rotational speed, 45 degrees tilt angle and 160 degrees C, for 1 h of processing with M-w similar to 10 000 g mol(-1), T-g similar to 158 degrees C and decomposition temperature similar to 530 degrees C, which is comparable to the conventionally prepared PSF.
机译：在以限制模式下操作的涡流流体装置（VFD）中的高剪切下制备聚砜（PSF），其性质与使用批量加工制备的性质相比。这涉及使双酚A（BPA）的预制二钠盐与4,4'-二氢噻苯基砜在无水条件下反应。扫描电子显微镜（SEM）建立在薄膜微流体平台中，PSF颗粒是片状的，用于短反应时间，并且具有长反应时间的纤维，与使用常规批量合成制备的聚合物的球形颗粒相反。系统地改变VFD的操作参数（玻璃管的转速，其倾斜角度和温度），以确定它们对分子量（MW），玻璃化转变温度（TG）和分解温度的影响，具有凝胶渗透色谱（ GPC），差分扫描量热法（DSC）和热重分析（TGA）。最佳VFD制备的PSF是以6000rpm的转速，45度倾斜角度和160℃，1小时的Mw加工，类似于10 000g mol（-1），Tg类似于158摄氏度和分解温度相似到530℃，其与常规制备的PSF相当。

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  • 来源
    《RSC Advances》 |2020年第25期|共7页
  • 作者

    Igder Aghil; Pye Scott; Al-Antaki Ahmed Hussein Mohammed; Keshavarz Alireza; Raston Colin L.; Nosrati Ata;

  • 作者单位

    Edith Cowan Univ Sch Engn Perth WA 6027 Australia;

    Flinders Univ S Australia Coll Sci &

    Engn Flinders Inst Nanoscale Sci &

    Technol Adelaide SA 5042 Australia;

    Flinders Univ S Australia Coll Sci &

    Engn Flinders Inst Nanoscale Sci &

    Technol Adelaide SA 5042 Australia;

    Edith Cowan Univ Sch Engn Perth WA 6027 Australia;

    Flinders Univ S Australia Coll Sci &

    Engn Flinders Inst Nanoscale Sci &

    Technol Adelaide SA 5042 Australia;

    Edith Cowan Univ Sch Engn Perth WA 6027 Australia;

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  • 正文语种 eng
  • 中图分类 化学;
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