نتایج جستجو برای: poly lactic acid nanocomposite films

تعداد نتایج: 907266  

2015
Wenyao Yang Yuetao Zhao Xin He Yan Chen Jianhua Xu Shibin Li Yajie Yang Yadong Jiang

In this paper, we demonstrate the preparation of a flexible poly (3,4-ethylenedioxythiophene) -poly (styrenesulfonate)/reduced graphene oxide (PEDOT-PSS/RGO) film with a layered structure via a simple vacuum filtered method as a high performance electrochemical electrode. The PEDOT-PSS/RGO films are characterized by scanning electron microscopy (SEM), X-ray diffraction, Raman spectroscopy, and ...

2006
Antonio R. Webb Vivek A. Kumar Guillermo A. Ameer

The mechanical properties of a tissue engineering scaffold are particularly important when engineering soft tissues as it has been shown that mechanical stimulation during in vitro tissue development can modulate cell differentiation, increase extracellular matrix synthesis, and enhance the mechanical properties of cartilaginous, ligamentous, and smooth muscle containing tissues [1-5]. Unfortun...

Journal: :علوم و تکنولوژی پلیمر 0
محمدطیب عزیزی فریبا گنجی ابراهیم واشقانی فراهانی

lactide was synthesized by reverse polymerization of low molecular weight poly(lactic acid) with two different molecular weights:1500 and 2500. two different lactide purification processes such as: recrystallization in ethyl acetate and washing the crude lactide with ether before recrystallization in ethyl acetate were evaluated. it has been demonstrated that increasing the molecular weight of ...

Journal: :international journal of hematology-oncology and stem cell research 0
hamidreza fasehee stem cell and regenerative medicine group, national institute of genetic engineering and biotechnology (nigeb), tehran , iran ardeshir ghavamzadeh hematology, oncology and stem cell transplantation research center, shariati hospital, tehran university of medical science, tehran, iran kamran alimoghaddam hematology, oncology and stem cell transplantation research center, shariati hospital, tehran university of medical science, tehran, iran seyed h. ghaffari hematology, oncology and stem cell transplantation research center, shariati hospital, tehran university of medical science, tehran, iran shahab faghihi stem cell and regenerative medicine group, national institute of genetic engineering and biotechnology (nigeb), tehran , iran

background: disulfiram is oral aldehyde dehydrogenase (aldh) inhibitor that has been used in the treatment of alcoholism. recent studies show that this drug has anticancer properties; however, its rapid degradation has limited its clinical application. encapsulation of disulfiram polymeric nanoparticles (nps) may improve its anticancer activities and protect rapid degradation of the drug. mater...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2013
E Hariprasad T P Radhakrishnan

The utility of polymer-metal nanocomposite thin films with in situ generated silver nanoparticles as substrates for surface-enhanced Raman scattering (SERS) is demonstrated. Thin films of poly(vinyl alcohol) and poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate) containing Ag nanoparticles generated in situ through thermal annealing and photoirradiation, respectively (Ag-PVA and Ag-PVVV), ar...

Journal: :Nanoscale research letters 2016
Ronghua Lu Ling Xu Zhaoyun Ge Rui Li Jun Xu Linwei Yu Kunji Chen

UNLABELLED Silicon is the most widely used material for solar cells due to its abundance, non-toxicity, reliability, and mature fabrication process. In this paper, we fabricated silicon nanoholes (SiNHS)/gold nanoparticles (AuNPS)/organic hybrid solar cells and investigated their spectral and opto-electron conversion properties. SiNHS nanocomposite films were fabricated by metal-assisted electr...

2013
Andrea G. P. R. Figueiredo Ana R. P. Figueiredo Ana Alonso-Varona Susana C. M. Fernandes Teodoro Palomares Eva Rubio-Azpeitia Ana Barros-Timmons Armando J. D. Silvestre Carlos Pascoal Neto Carmen S. R. Freire

A series of bacterial cellulose-poly(2-hydroxyethyl methacrylate) nanocomposite films was prepared by in situ radical polymerization of 2-hydroxyethyl methacrylate (HEMA), using variable amounts of poly(ethylene glycol) diacrylate (PEGDA) as cross-linker. Thin films were obtained, and their physical, chemical, thermal, and mechanical properties were evaluated. The films showed improved transluc...

The aim of this study was to produce Carboxy Methyl Cellulose (CMC) and Poly Vinyl Alcohol (PVA) films and to enhance their properties by reinforcing them with nanoclay particles. Thus, nanocomposite films were prepared with blending of CMC and PVA, as a matrix and several filler loadings of nanoclay particles. The various formulations of nanocomposite films obtained with casting m...

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