壳聚糖/纳米TiO_2对淀粉复合膜性能的影响
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摘要
以马铃薯淀粉为基材,壳聚糖和纳米TiO_2为增强相,研究壳聚糖和纳米TiO_2对马铃薯淀粉成膜性能的影响。通过溶液共混法将壳聚糖的乙酸溶液与马铃薯淀粉糊化液,按照4∶6的比例均匀混合,加入纳米Ti O2流延成膜,研究壳聚糖和纳米TiO_2对复合膜的阻氧性及透湿性的影响;用XRD、SEM表征复合膜的结构与形态。研究结果表明,马铃薯淀粉与壳聚糖、纳米TiO2组分成膜时具有良好的相容性;壳聚糖和纳米TiO_2能有效改善复合膜的水蒸气透过性和阻氧性;纳米TiO_2/壳聚糖/马铃薯淀粉复合膜较马铃薯淀粉单膜、马铃薯淀粉/壳聚糖复合膜、马铃薯淀粉/纳米TiO_2复合膜的阻氧性提高了43. 38%、7. 56%、19. 14%;水蒸气透过率降低了32. 41%、39. 18%、30. 89%。壳聚糖和纳米TiO_2添加到马铃薯淀粉液中共混制膜,能够增强复合膜的性能。
Taking potato starch as the main film-forming substrate,chitosan and nano titanium dioxide( TiO_2) as the additive,the influence of chitosan and nano TiO_2 on the properties of starch composite film was investigated. The acetic acid solution from chitosan and starch gelatinized liquid were homogeneously mixed with the ratio of 4 ∶ 6 by solution blending process and then added nano TiO_2 to form film. The influence of chitosan and nano TiO_2 on oxygen barrier and water vapor permeability of the composite films were analyzed,the relevant structure of the composite films were characterized by X-ray diffraction( XRD) and scanning electron microscopy( SEM). The results show that there are good compatibilities among chitosan,potato starch and nano TiO_2. Chitosan and nano TiO_2 could improve the vapor permeability and oxygen barrier effectively. The oxygen barrier of nano TiO_2/chitosan/potato starch nano composite film could improve43. 38%、7. 56%、19. 14% comparing with potato starch film, potato starch/chitosan composite film and potato starch/TiO_2 composite film and water vapor permeability could reduce 32. 41%、39. 18%、30. 89%,respectively. Hence,the performance of the composite film could be improved with the addition of chitosan and nano TiO_2.
Taking potato starch as the main film-forming substrate,chitosan and nano titanium dioxide( TiO_2) as the additive,the influence of chitosan and nano TiO_2 on the properties of starch composite film was investigated. The acetic acid solution from chitosan and starch gelatinized liquid were homogeneously mixed with the ratio of 4 ∶ 6 by solution blending process and then added nano TiO_2 to form film. The influence of chitosan and nano TiO_2 on oxygen barrier and water vapor permeability of the composite films were analyzed,the relevant structure of the composite films were characterized by X-ray diffraction( XRD) and scanning electron microscopy( SEM). The results show that there are good compatibilities among chitosan,potato starch and nano TiO_2. Chitosan and nano TiO_2 could improve the vapor permeability and oxygen barrier effectively. The oxygen barrier of nano TiO_2/chitosan/potato starch nano composite film could improve43. 38%、7. 56%、19. 14% comparing with potato starch film, potato starch/chitosan composite film and potato starch/TiO_2 composite film and water vapor permeability could reduce 32. 41%、39. 18%、30. 89%,respectively. Hence,the performance of the composite film could be improved with the addition of chitosan and nano TiO_2.
引文
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[8]张权,张婉玉,尹进,等.可食性淀粉/壳聚糖复合膜的制备与性能研究[J].包装工程,2015,36(13):40-46.
[2]OLEYAEI S A,ZAHEDI Y,GHANBARZADEH B,et al.Modification of physicochemical and thermal properties of starch films by incorporation of Ti O2nanoparticles[J].Int JBiol Macromol,2016,89:256-264.
[3]刘莹,许琳,刘颖.壳聚糖/香菇多糖可食性膜的性能研究及表征[J].食品工业科技,2015,36(12):287-290.
[4]HUBER K C,EMBUSCADO M E.Edible films and coatings for food applications[M].New York:Springer,2009.
[5]GHANBARZADEH B,ALMASI H,ENTEZAMI A A.Improving the barrier and mechanical properties of corn starchbased edible films:Effect of citric acid and carboxymethyl cellulose[J].Ind Crops Prod,2011,33(1):229-235.
[6]TENORE G C,CLAMPAGLLA R,ARNOLD N A,et al.Antimicrobial and antioxidant properties of the essential oil of Salvia lanigera from Cyprus[J].Food Chem Toxicol,2011,49(1):238-243.
[7]杜易阳,孙庆申,韩德权,等.壳聚糖淀粉膜的研制及结构性能分析[J].食品工业科技,2011,32(12):276-279.
[8]张权,张婉玉,尹进,等.可食性淀粉/壳聚糖复合膜的制备与性能研究[J].包装工程,2015,36(13):40-46.