Hydrothermal in situ preparation of TiO2 particles onto poly(lactic acid) electrospun nanofibres

被引：40

作者：

Gupta, Kamal K. ^{[2
]}

Mishra, Pradeep K. ^{[2
]}

Srivastava, Pradeep ^{[3
]}

Gangwar, Mayank ^{[4
]}

Nath, Gopal ^{[5
]}

Maiti, Pralay ^{[1
]}

机构：

[1] Banaras Hindu Univ, Indian Inst Technol, Sch Mat Sci & Technol, Varanasi 221005, Uttar Pradesh, India

[2] Banaras Hindu Univ, Indian Inst Technol, Dept Chem Engn, Varanasi 221005, Uttar Pradesh, India

[3] Banaras Hindu Univ, Indian Inst Technol, Sch Biochem Engn, Varanasi 221005, Uttar Pradesh, India

[4] Banaras Hindu Univ, Inst Med Sci, Dept Pharmacol, Varanasi 221005, Uttar Pradesh, India

[5] Banaras Hindu Univ, Inst Med Sci, Dept Microbiol, Varanasi 221005, Uttar Pradesh, India

来源：

APPLIED SURFACE SCIENCE | 2013年 / 264卷

关键词：

Poly(lactic acid) (PLA); Nanofibres; Titaniun dioxide (TiO2); Electrospinning; Coating; Antimicrobial activity; SILVER NANOPARTICLES; POLY(L-LACTIC ACID); RUTILE TIO2; ACETIC-ACID; ALPHA-FORM; ANATASE; NANOCRYSTALS; GROWTH; POLYCAPROLACTONE; TEMPERATURE;

D O I：

10.1016/j.apsusc.2012.10.029

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The novel poly(lactic acid) (PLA)/TiO2 hybrid nanofibres are produced via electrospinning technique. Hydrolysed titanium precursor has been electrosprayed simultaneously on the continuous electrospun PLA nanofibres surface. The adhered amorphous titania has been transformed into TiO2 particle through hydrothermal treatment for different times. The phase structure has been worked out using XRD, FTIR, XPS and Raman spectroscopy. The predominant phase is anatase with a small extent of brookite phase after the hydrothermal treatment. The size and location of TiO2 particle have been determined using SEM micrographs. The orderness of the PLA crystallites has been checked using XRD patterns before and after hydrothermal treatment. UV absorption capability of the titania coated nanofibres has been enhanced to a significant level. The antimicrobial activity of the hybrids has been verified using two different microorganisms (gram negative Escherichia coli and gram positive Staphylococcus aureus bacteria) and 70% reduction of antimicrobial activity has been reported. (C) 2012 Elsevier B. V. All rights reserved.

引用

页码：375 / 382

页数：8

共 40 条

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