Chem. J. Chinese Universities ›› 2015, Vol. 36 ›› Issue (4): 799.doi: 10.7503/cjcu20140842

• Polymer Chemistry • Previous Articles     Next Articles

Effect of Modified Sodium Alginate Aggregation Behavior on Electrospun Nanofiber Morphology

GAO Pengbo1, FENG Yuhong1,*(), LI Jiacheng1,*(), YAN Huiqiong2, HUANG Junhao1, WU Tiantian1, HUANG Wenhong1   

  1. 1. College of Materials and Chemical Engineering, Hainan University, Haikou 570228, China
    2. College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
  • Received:2014-09-16 Online:2015-04-10 Published:2015-03-19
  • Contact: FENG Yuhong,LI Jiacheng E-mail:ljcfyh@263.net;lijiacheng@hainu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.21366010), the Focus Plan of Hainan Province Science and Technology, China(No.ZDXM2014037, ZDXM20120003), the Science and Technology Project of Haikou, China(No.2014055), the Natural Science Foundation of Hainan, China(No.214017), the Open Fund of Hainan Province Water Environmental Pollution Control, China and Resource Reuse Key Laboratory, China

Abstract:

Using the potassium persulfate(KPS) as an initiator, through modified reaction of diacetone acrylamide(DAA) and sodium alginate(SA), the amphiphilic SA-PDAA block copolymer was synthesized. By electrospinning the mixture of SA-PDAA and polyvinyl alcohol(PVA) solution, SA-PDAA/PVA electrospun fibers were prepared. The structure and properties of SA-PDAA were characterized by means of Fourier transform infrared spectroscopy(FTIR), differential scanning calorimetry(DSC) and fluorescence spectrum. Furthermore. The physical properties of SA-PDAA spinning solution were determined by viscometer, surface tensiometer and electrical conductivity meter, the morphology of SA-PDAAA/PVA electrospun fibers were determined by scanning electron microscopy(SEM). And the drug release studies of SA-PDAAA/PVA electrospun fibers were also investigated. Experimental results showed that DAA had successfully grafted onto the sodium alginate molecular chains. The critical aggregation concentration measured by fluorescence spectrum was reduced to 0.072 g/L, which demonstrated the good amphipathy of SA-PDAA. The morphology of SA-PDAA/PVA electrospun fiber exhibited more uniform size. The drug release properties show that SA-PDAA can effectively slow the drug release rate, thus improving the retarded releasing characteristics of SA-PDAA/PVA electrospun fibers.

Key words: Modified sodium alginate, Polyvinyl alcohol, Electrospinning, Nanofiber, Diacetone acrylamide

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