Characterization, Mechanical, and Thermal Properties of Gamma Irradiated Starch Films Reinforced with Mineral Clay

被引:26
作者
Ibrahim, Sayeda M. [1 ]
机构
[1] Natl Ctr Radiat Res & Technol, Dept Radiat Chem, Nasr City, Cairo, Egypt
关键词
starch; clay; gamma radiation; nanocomposite; BARRIER PROPERTIES; CROSS-LINKING; NANOCOMPOSITES; DERIVATIVES; HYDROGELS;
D O I
10.1002/app.32732
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Composite fabricated from starch and different concentrations of clay was prepared by solution casting method. The casted film was irradiated to different gamma irradiation doses 10, 20, 30, and 40 kGy. The dispersion of clay into starch was investigated by using X-ray diffraction (XRD). The structural morphology of the composite was measured by scanning electron microscope and infrared spectroscopy. Film properties, such as water vapor transmission, mechanical, and thermal properties were also measured. The gel content and swelling behavior of the starch/clay composite were investigated. It was found that the gel content increases with increasing clay content and irradiation dose. The results obtained indicate that the starch/clay composite showed an increase in the tensile strength, thermal stability. Moreover, there is a decrease in water vapor transmission (WVRT) which improves its barrier properties. Both XRD and infrared spectroscopy showed that starch can be intercalated into the clay galleries. Also antibiotic drug Chlortetracycline HCl was loaded into the starch/clay composite by direct adsorption method. Chlortetracycline HCl adsorption capacity of composite was found to increase from 1.13 to 4.20 mg Chlortetracycline HCl per gram dry film with increasing amount of drug concentration. In vitro drug release studies in different buffer solutions showed that the basic parameters affecting the drug release behavior of the film are pH of the solution, drug concentration, and time. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 119: 685-692, 2011
引用
收藏
页码:685 / 692
页数:8
相关论文
共 31 条
[1]   Polymer-layered silicate nanocomposites: Preparation, properties and uses of a new class of materials [J].
Alexandre, Michael ;
Dubois, Philippe .
Materials Science and Engineering: R: Reports, 2000, 28 (1-2) :1-63
[2]   Effect of filler networking on the response of thermosensitive composite hydrogels [J].
Bignotti, Fabio ;
Lebon, France ;
Peroni, Isabella .
EUROPEAN POLYMER JOURNAL, 2007, 43 (05) :1996-2006
[3]   A study of the molecular relaxations in solid starch using dielectric spectroscopy [J].
Butler, MF ;
Cameron, RE .
POLYMER, 2000, 41 (06) :2249-2263
[4]   Plasticizing-antiplasticizing effects of water on physical properties of tapioca starch films in the glassy state [J].
Chang, YP ;
Cheah, PB ;
Seow, CC .
JOURNAL OF FOOD SCIENCE, 2000, 65 (03) :445-451
[5]   Rheology of starch-clay nanocomposites [J].
Chiou, BS ;
Yee, E ;
Glenn, GM ;
Orts, WJ .
CARBOHYDRATE POLYMERS, 2005, 59 (04) :467-475
[6]   Antiplasticisation and oxygen permeability of starch-sorbitol films [J].
Gaudin, S ;
Lourdin, D ;
Forssell, PM ;
Colonna, P .
CARBOHYDRATE POLYMERS, 2000, 43 (01) :33-37
[7]   Hydrogels for biomedical applications [J].
Hoffman, Allan S. .
ADVANCED DRUG DELIVERY REVIEWS, 2012, 64 :18-23
[8]   GAS PERMEABILITIES IN RUBBER CLAY HYBRID [J].
KOJIMA, Y ;
FUKUMORI, K ;
USUKI, A ;
OKADA, A ;
KURAUCHI, T .
JOURNAL OF MATERIALS SCIENCE LETTERS, 1993, 12 (12) :889-890
[9]   Thermal transition characteristics of heat-moisture treated corn and potato starches [J].
Lim, ST ;
Chang, EH ;
Chung, HJ .
CARBOHYDRATE POLYMERS, 2001, 46 (02) :107-115
[10]   Preparation and characterisation of biodegradable starch-based nanocomposite materials [J].
McGlashan, SA ;
Halley, PJ .
POLYMER INTERNATIONAL, 2003, 52 (11) :1767-1773