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Alternate poly(amide-imide)s based on 1,4-and 1,3-bis(4-trimellitimido)benzene and their mixtures
Springer Science and Business Media LLC - Tập 5 - Trang 233-241 - 1998
Several series of alternate poly(amide-imide)s [P(A-alt-I)s] were synthesized by aromatic dicarboxylic acid (I-
p or I-
m), which was prepared by the condensation of p-phenylenediamine (or m-phenylenediamine), trimellitic anhydride, and various aromatic diamines by means of direct polycondensation. A diimide-diacid (I-
p) with a p-phenylene group was used to synthesize P(A-alt-I)s III, and P(A-alt...... hiện toàn bộ
Synthesis and characterization of photo-crosslinkable liquid crystalline copolyesters containing arylidene-keto and chalcone moieties
Springer Science and Business Media LLC - Tập 24 - Trang 1-12 - 2017
A series of six photo-crosslinkable thermotropic liquid crystalline copolyesters were prepared by polycondensation method at room temperature using tetra-n-butylammonium bromide as the phase transfer catalyst. The diacid chloride involved in this process was adipoyl chloride, the common diol (diol-1), also referred to as bischalcone diol, used was 3,3′-benzene-1,4-diylbis[1-(4-hydroxyphenyl)prop-2...... hiện toàn bộ
Preparation and characterization of modified ultrafiltration nylon 6 membrane modified by poly (acrylamide-co-maleic anhydride)
Springer Science and Business Media LLC - Tập 25 - Trang 1-12 - 2018
In attempt to prepare modified ultrafiltration (UF) Nylon 6 membrane and improve its hydrophilicity and anti-fouling performance, poly (acrylamide-co-maleic anhydride)(AM-MA) was utilized as hydrophilic copolymer additive in the dope solution. The UF Nylon 6/AM-MA membranes were synthesized through blending Nylon 6 with poly(AM-MA) using a phase inversion process. Characterization of the prepared ...... hiện toàn bộ
Synthesis and application of polyurethane basic organic-inorganic hybrid materials as highly hydrophobic coatings
Springer Science and Business Media LLC - Tập 23 - Trang 1-7 - 2016
In this study, we report a simple method which via modified-colloid silica blending with polybutadiene-base polyurethane to form a hydrophobic composite material. The hydrophobic film is characterized by optical microscopy, scanning electron microscopy (SEM), and water contact angle. Desired surface roughness was obtained by hydrophobic silica tuning the microstructures that contact angle approach...... hiện toàn bộ
Comparison of crystallization behavior of Trans-1,4-polyisoprene under different crystallization temperature, pressure and tension
Springer Science and Business Media LLC - Tập 26 - Trang 1-7 - 2019
The crystallization of trans-1,4-polyisoprene (TPI) was influenced by many factors, such as the processing temperature, pressure and stress. The crystallization of TPI prepared under different conditions (temperature, pressure and tension) was characterized by Fourier transform infrared spectroscopy (FTIR), polarizing light microscopy(POM)and X-ray diffraction(XRD). The experimental results showed...... hiện toàn bộ
Improving the adsorption of poly(o-phenylenediamine) to heavy metal ions in aqueous solution through its composite with carbon dots
Springer Science and Business Media LLC - - 2021
Synthesis and characterization of the block copolymers using the novel bifunctional initiator by RAFT and FRP technics: evaluation of the primary polymerization parameters
Springer Science and Business Media LLC - Tập 27 - Trang 1-7 - 2020
Synthesis of poly(styrene-b-methyl methacrylate) block copolymers were obtained via reversible addition-fragmentation chain transfer (RAFT) polymerization of styrene using RAFT-macro agent. For this purpose, 4-bromomethyl benzoyl chloride was obtained using 4-methylbenzoyl chloride and N-bromosuccinimide. The mono functional bromomethyl benzoyl t-butyl peroxy ester (t-BuBP) was obtained by reactio...... hiện toàn bộ
An ultraviolet light-responsive polyacrylate film with high fatigue resistance
Springer Science and Business Media LLC - Tập 29 - Trang 1-11 - 2022
Photochromic materials with stable properties during long-term use have a very broad application prospect. Herein, five kinds of spirooxazines (SO1-SO5) with antioxidant properties were successfully synthesized by blending and covalently bonding antioxidants. Then various photochromic polyacrylate laminating adhesives (PA1-PA7) with good fatigue resistance were prepared by incorporating spirooxazi...... hiện toàn bộ
Electrospinning of chitosan/PVA nanofibrous membrane at ultralow solvent concentration
Springer Science and Business Media LLC - Tập 24 - Trang 1-10 - 2017
In this work, chitin flakes were deacetylated with 50% (w/v) sodium hydroxide under nitrogen atmosphere at 120 °C for 80 min to obtain chitosan. The chitosan produced was characterized for degree of deacetylation (DD) and molecular weight. Chitosan with the DD of 78–80% was reproducibly obtained. Molecular weight showed an inverse relationship with concentration of NaOH. Chitosan nanofibrous membr...... hiện toàn bộ
Study on synthesis and property of multi-copolymer scale inhibitor
Springer Science and Business Media LLC - Tập 29 Số 11 - 2022
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