نتایج جستجو برای: poly acrylic acid
تعداد نتایج: 815823 فیلتر نتایج به سال:
Biodegradable polyacrylates were produced by a series of novel copolymerization and/or crosslinking techniques using poly(vinyl alcohol) (PVA) moieties modified by the incorporation of olefinic structures. PVA was modified by a tosylation and/or detosylation reaction. The functionalized PVA was copolymerized and/or crosslinked with acrylic acid or its partially neutralized form to give crosslin...
Abstract Nano ZnO is biosynthesized using Lactobcillus sp. Poly Acrylic acid-co-Acrylonitrile/ZnO, PAACAN/ZnO, and poly acid-co-Maleic acid/ZnO, PAACMA/ZnO, nancomposites were synthesized 60 Co γ -rays. PAACAN/ZnO PAACMA/ZnO nanocomposites characterized used as sorbents for Co(II) radionuclide. The monolayer adsorption capacities of onto are 18.235, 7.105 mgg −1 , respectively at pH 4.5 20 °C. ...
Thermodynamic study on the interaction of β-CD with poly ethylene oxide and poly acrylic acid was performed by isothermal titration calorimetry at 298K. when β-CD is added to the interpolymer complex, competition is created between host-guest and Hydrogen bond. Enthalpy of interaction between the β-CD and interpolymer complex was calculated using the extended solvation theory. P=1 Shows that w...
The analysis of the charge, structure and molecular interactions of/within polymeric substrates defines an important analytical challenge in materials science. Accordingly, advanced electrokinetic methods and theories have been developed to investigate the charging mechanisms and structure of soft material coatings. In particular, there has been significant progress in the quantitative interpre...
Human embryonic stem cells (hESCs) hold great promise for regenerative medicine and transplantation therapy due to their self-renewal and pluripotent properties. We report that 2D thin film scaffolds composed of biocompatible polymer grafted carbon nanotubes (CNTs), can selectively differentiate human embryonic stem cells into neuron cells while maintaining excellent cell viability. According t...
N-Acylated poly(aminoester) (NPAE) macromonomers were synthesised via spontaneous copolymerisation of 2-oxazolines and acrylic acid. Inherent quantitative introduction of α-vinyl end-groups was observed, which enabled the preparation of a series of well-defined NPAE comb polymers through redox-initiated RAFT polymerisation. Investigations of the thermal properties of the comb polymers revealed ...
This work presents an important example of novel hybrid vesicles with pH-triggered transmembrane channels prepared by co-assembly of poly(acrylic acid)-g-poly(monomethoxy ethylene glycol) (PAAc-g-mPEG) with a cationic lipid, didodecyldimethylammonium bromide (DDAB), via electrostatic interaction for effective doxorubicin (DOX) release.
Hydraulic permeability and molecular weight cutoff (MWCO) performance tuning of polysulfone (PSf) ultrafiltration (UF) membrane was attained via surface modification with a tethered layer poly(acrylic acid) (PAA). Surface nano-structured (SNS) PAA synthesized onto base PSf UF membranes by atmospheric pressure plasma (APP) activation followed graft polymerization (GP) acrylic acid (AA). Through ...
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