Preparation of Cross-linked Poly (St/AAm) Microspheres by Emulsion Polymerization

Jie HE; Chun-lin XIANG; Qing-mei CHEN; Wei ZHAO; Fu CHEN

doi:10.14028/j.cnki.1003-3726.2019.08.004

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Preparation of Cross-linked Poly (St/AAm) Microspheres by Emulsion Polymerization

更新时间：2022-09-02

- Preparation of Cross-linked Poly (St/AAm) Microspheres by Emulsion Polymerization
- Polymer Bulletin Vol. 32, Issue 8, Pages: 22-28(2019)
- 作者机构：
  
  1.西南石油大学　化学化工学院　四川省油气田应用化学重点实验室，成都 610500
  2.中国石油西南油气田分公司天然气研究院，成都 610213
  3.中国石油川庆钻探工程有限公司地质勘探开发研究院，成都 610051
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2019.08.004
  CLC：
- Published：20 August 2019，
  
  Received：07 January 2019，
  
  Revised：10 June 2019，
扫描看全文
Jie HE, Chun-lin XIANG, Qing-mei CHEN, Wei ZHAO, Fu CHEN. Preparation of Cross-linked Poly (St/AAm) Microspheres by Emulsion Polymerization. [J]. Polymer Bulletin 32(8):22-28(2019)
DOI：

Jie HE, Chun-lin XIANG, Qing-mei CHEN, Wei ZHAO, Fu CHEN. Preparation of Cross-linked Poly (St/AAm) Microspheres by Emulsion Polymerization. [J]. Polymer Bulletin 32(8):22-28(2019) DOI： 10.14028/j.cnki.1003-3726.2019.08.004.

摘要

针对目前聚合物微球调剖剂品种单一、生产成本高的问题，本文以苯乙烯（St）、丙烯酰胺（AAm）、

，

'-亚甲基双丙烯酰胺（MBA）为原料，采用乳液聚合法，制备出了粒径小于1

m的交联聚（St/AAm）微球。采用粒度分析、SEM、TEM等手段详细研究不同反应条件对微球粒径的影响规律，并对其影响机理进行了探讨。SEM和TEM结果表明，AAm与St质量比和MBA加量是制备微球的关键，只有控制AAm与St质量比≤3: 17，MBA加量≤18.5g/L才能制备出形状规则的微球。粒度分析结果表明，AAm与St质量比和MBA加量对微球粒径的影响最大；微球的粒径随AAm与St质量比的增加而变大，随着MBA加量的增加，呈先减小后增加的趋势；AES浓度、APS加量以及温度对微球粒径的影响不大。微球的最佳制备条件是：AAm与St质量比≤3: 17，MBA浓度≤6.25g/L，AES浓度≤7g/L，APS浓度为1.25g/L，温度70℃。在此条件下，通过调节反应条件，可实现微球平均粒径在58.5～559.8nm之间可调。

Abstract

In view of the fact that the current polymer microsphere profile control agent has a single variety and high production cost

cross-linked poly (styrene-acrylamide) microspheres with the mean diameters lower than 1

were developed by emulsion polymerization in the study. Styrene(St)

acrylamide (AAm)

and N

N′-methylenebisacrylamide(MBA)

were selected as the monomers. The factors which influence the mean diameter of the microspheres were investigated by particle size analysis

transmission electron microscopy(TEM)

and scanning electron microscopy(SEM). The SEM and TEM results show that the mass ratio of AAm to St and MBA addition is the key to prepare well-defined microspheres

the mass ratio of AAm to St must ≤3 : 17 and the MBA concentration must ≤ 18.5g/L. The results of particle size analysis show that the mass ratio of AAm to St and MBA concentration influence the particle size of the microspheres significantly; the mean diameter of the microspheres increased with the increase of the mass ratio of AAm to St. Increasing MBA concentration

the mean diameter of the microspheres increased firstly

and then decreased; The influence of AES concentration

APS addition and temperature on the mean diameter of the microspheres is insignificant. The results show that the optimum conditions for preparing well-defined microspheres are the mass ratio of AAm to St≤3 : 17

MBA concentration ≤6.25g/L

AES concentration ≤7g/L

APS concentration 1.25g/L

and temperature 70℃. Under the optimum conditions

the microspheres with mean diameters ranging from 58.5 to 559.8nm can be prepared.

关键词

乳液聚合交联聚（苯乙烯／丙烯酰胺）微球低渗油藏调剖剂

Keywords

Emulsion polymerizationCross-linked poly (styrene-acrylamide) microspheresLow permeability reservoirProfile control agent

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Related Institution

Changchun Institute of Applied Chemistry,Chinese Academy of Sciences

School of Chemical Engineering, Changchun University of Technology

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