نتایج جستجو برای: prolylene copolymer

تعداد نتایج: 12139  

Journal: :Advanced nanoBiomed research 2021

Drug Delivery In article number 2000069, Boaz Mizrahi and co-workers report a new nano delivery system that is based on injectable liquid copolymer. The copolymer, starPEG-PLGA (red blue in the image) mixed with drug (green spheres without any solvents or excipients. After mixture injected into body, copolymer self-assembles situ well-defined nanoparticles.

2011
Shan-Yang Lin Wen-Ting Cheng Yen-Shan Wei Hong-Liang Lin

INTRODUCTION Acrylic resins containing acrylic acid (AA), methyl methacrylate (MMA) or acrylic–methacrylic copolymer are the most commonly used polymeric materials for biomedical and pharmaceutical applications owing to their hydrophilicity and biocompatibility.1–4 Recently, a new polyvinyl alcohol (PVA) copolymer designed by copolymerizing AA and MMA with PVA was successfully developed as a ca...

2017
Qingxiang Guan Guangyuan Zhang Dandan Sun Yue Wang Kun Liu Miao Wang Cheng Sun Zhuo Zhang Bingjin Li Jiayin Lv

Bletilla striata polysaccharides (BSPs) have been used in pharmaceutical and biomedical industry, the aim of the present study was to explore a BSPs amphiphilic derivative to overcome its application limit as poorly water-soluble drug carriers due to water-soluble polymers. Stearic acid (SA) was selected as a hydrophobic block to modify B. striata polysaccharides (SA-BSPs). Docetaxel (DTX)-load...

Journal: :Clinical cancer research : an official journal of the American Association for Cancer Research 2000
J G Shiah Y Sun C M Peterson R C Straight J Kopecek

This study demonstrates the selective tumor targeting and the antitumor efficacy of the N-(2-hydroxypropyl)methacrylamide (HPMA) copolymer-bound mesochlorin e6 monoethylenediamine (Mce6) and HPMA copolymer-bound Adriamycin (ADR) in combination photodynamic therapy (PDT) and chemotherapy against human ovarian OVCAR-3 carcinoma xenografted in female athynmic mice. The concentrations of Mce6 and A...

Journal: :علوم و تکنولوژی پلیمر 0
حمید صالحی مبارکه عبدالحسین مسعودی امیرحسین ستاری وفایی

hydrolysis of ethylene-vinyl acetate copolymer in alkaline conditions using two systems of naoh/methanol and koh/isopropanol has been studied and the formation of ethylene-vinyl alcohol copolymer was systematically examined using nmr spectroscopy and dsc measurements. vinyl acetate weight percentage and the degree of hydrolysis were calculated from nmr spectroscopy and it is shown that hydrolys...

Journal: :علوم و تکنولوژی پلیمر 0
حمید صالحی مبارکه عبدالحسین مسعودی امیرحسین ستاری وفایی آرزو نوری

0

Journal: :Organic & biomolecular chemistry 2008
Motofusa Akiyama Atsushi Ikeda Takashi Shintani Yuki Doi Jun-Ichi Kikuchi Takuya Ogawa Keiichiro Yogo Tatsuo Takeya Naoyuki Yamamoto

Unmodified [60]fullerenes (C60) were solubilised with high stability using various type of poly(ethylene glycol) (PEG) based block copolymer micelles. Block copolymer micelle-incorporated C60 fullerenes were studied in cultures for biological activities using human cervical cancer HeLa cells. As a result, the cationic block copolymer micelles delivered C60 into the cells depending on their surf...

2016
Michelle K. Gaines Steven D. Smith Jon Samseth Michael R. Bockstaller Russell B. Thompson Richard J. Spontak

Although block copolymer motifs have received considerable attention as supramolecular templates for inorganic nanoparticles, experimental observations of a nanostructured diblock copolymer containing inorganic nanoparticles-supported by theoretical trends predicted from a hybrid self-consistent field/density functional theory-confirm that nanoparticle size and selectivity can likewise stabiliz...

Journal: :journal of reports in pharmaceutical sciences 0
katayoun derakhshandeh department of pharmaceutics, faculty of pharmacy, kermanshah university of medical sciences, kermanshah 67149-67346, and nanosciences and technology research center, kermanshah university of medical sciences, kermanshah, iran maryam haghkhah mahmood amiri

9-nitrocamptothecin (9-nc) is a semisynthetic and a low soluble analogue of camptothecin alkaloids that target nuclear enzyme topoisomerase i. the unstable lactone form of 9-nc in biological fluids requires for its cytotoxic activity. to improve aqueous solubility and stability in biological media, 9-nc was loaded in polymeric nanoparticles. in this paper, we studied the effect of peg percent (...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2006
sayed mohammad taghi sadeghi

ionomers are generally described by copolymers having either acrylic or methacylic acid as one component and the other component is mostly either ethylene or styrene. the objective of this research was to study the thermal behaviour and stability of ionomers of styrene with some alkali metal acrylates. these materials have been synthesized by neutralization of the respective copolymer containin...

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