نتایج جستجو برای: silicone polyether copolymers

تعداد نتایج: 19540  

Aiyoub Parchehbaf Jadid Meysam Nouri Molalar Mohammad Hossein Nasirtabrizi, Zahed Ghashangi,

4-ChloroMethyl Styrene (CMS) was copolymerized with different monomers such as Methyl MethAcrylate (MMA), Methyl Acrylate (MA), 2-EthylHexyl Acrylate (EHA) by free radical polymerization method at 70 ±1°C using a,a'-Azobis(IsoButyroNitrile) (AIBN) as an initiator. The copolymer compositions were obtained using related 1HNMR spectra and the poly...

Journal: :Journal of biomedical materials research 1977
K W Marck C H Wildevuur W L Sederel A Bantjes J Feijen

A series of copoly(alpha-amino acids) with varying percentages of hydrophilic (L-aspartic acid) and hydrophobic monomers (L-leucine, beta-methyl-L-aspartate, and beta-benzyl-L-aspartate) were implanted subcutaneously in rats and the macroscopic degradation behavior was studied. Three groups of materials (A,B,C) with different ranges of hydrophilicity were distinguished: A) hydrophobic materials...

2017
Victor H Pino-Ramos Carmen Alvarez-Lorenzo Angel Concheiro Emilio Bucio

A one-step method was implemented to graft N-vinylcaprolactam (NVCL) and 4-vinylpyridine (4VP) onto silicone rubber (SR) films using gamma radiation in order to endow the silicone surface with temperature- and pH-responsiveness, and give it the ability to host and release diclofenac in a controlled manner and thus prevent bacterial adhesion. The effects of radiation conditions (e.g., dose and m...

Journal: :Applied sciences 2022

A new polymeric construct is proposed as a starting material for liver-targeted delivery system in the present communication. The has been designed to be sensitive pH variations and potentially loaded with hydrophobic antitumoral agents. It based on one of most used copolymers field nanomedicine: PEG-PLA. latter, usually obtained by polymerization lactic acid hydroxyl-terminated polyether, asse...

Journal: :Journal of The Electrochemical Society 2021

Polyether-based polymer electrolytes containing an M x [N(SO 2 CF 3 ) ] salt ( = 1 for Li and Na, 0.5 Mg Ca) were investigated their thermal stabilities ionic conductivities, owing to high electrochemical stability interfacial compatibility at electrodes as the electrolyte layer of all-solid-state batteries. The properties / Na metal electrode interface also explored. conductivity exhibited a s...

2002
Claudio Ronco Francesco Locatelli Ciro Tetta Geoffrey M. Berlyne

ژورنال: توانبخشی 2019

Objective Diabetic foot ulcers are significant complications of diabetes that can lead to amputation. Partial foot prostheses can be used to redistribute the plantar pressure on the residual limb to alleviate local pressures and prevent re-amputation at more proximal levels. The current study aimed to describe the fabrication of an original silicone foot prosthesis designed for a diabetic patie...

Aiyoub Parchehbaf Jadid Mohammad Hossein Nasirtabrizi, Zeinab Mohammadpoor Ziaei

Maleic anhydride (MAN) copolymers with methyl methacrylate(MMA), ethyl methacrylate(EMA), methyl acrylate(MA), ethyl acrylate (EA) and buthyl acrylate (BA) ( in a 1:1 mole ratio) were synthesized by free radical polymerizations method under vacuum -azobis(isobutironitrile)(AIBN) as an initiator of reaction at 701C. The copolymer compositions were determined using related 1H NMR spectra techni...

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