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2009 Volume 27 Issue 3
2009, 27(3): 297-306
Abstract:
The adsorption amount of poly(styrene sulfonate) and poly(dimethyldiallyl ammonium chloride) (PSS/PDDA) self-assembled multilayer membranes in designed dipping solvents were measured by UV-Vis-spectroscopy and quartz crystal microbalance (QCM). Intri...
The adsorption amount of poly(styrene sulfonate) and poly(dimethyldiallyl ammonium chloride) (PSS/PDDA) self-assembled multilayer membranes in designed dipping solvents were measured by UV-Vis-spectroscopy and quartz crystal microbalance (QCM). Intri...
2009, 27(3): 307-315
Abstract:
The phase behaviors of symmetric diblock copolymer thin films confined between two hard, parallel and diversified patterned surfaces are investigated by three-dimensional dissipative particle dynamics (DPD) simulations. The induction of diversified p...
The phase behaviors of symmetric diblock copolymer thin films confined between two hard, parallel and diversified patterned surfaces are investigated by three-dimensional dissipative particle dynamics (DPD) simulations. The induction of diversified p...
2009, 27(3): 327-334
Abstract:
A series of poly(dimethylsiloxane) (PDMS)-4,4’-diphenylmethanediisocyanate(MDI)-poly(ethylene glycol) (PEG) multiblock copolymers were synthesized by employing two-step growth polymerization and investigated by AFM, XPS, contact angle system, protein...
A series of poly(dimethylsiloxane) (PDMS)-4,4’-diphenylmethanediisocyanate(MDI)-poly(ethylene glycol) (PEG) multiblock copolymers were synthesized by employing two-step growth polymerization and investigated by AFM, XPS, contact angle system, protein...
2009, 27(3): 335-341
Abstract:
New amphoteric hydrogels based on carboxyethylchitosans (CECH) with various degrees of substitution (DS) were prepared using different amounts of epichlorohydrin (ECH) as the crosslinking agent. The equilibrium swelling ratio (SW) was determined as f...
New amphoteric hydrogels based on carboxyethylchitosans (CECH) with various degrees of substitution (DS) were prepared using different amounts of epichlorohydrin (ECH) as the crosslinking agent. The equilibrium swelling ratio (SW) was determined as f...
2009, 27(3): 343-350
Abstract:
To enhance the impact strength of polyamide 6, hydrolytic polymerization modification by the polyaminoamide-g-poly(ethylene glycol) (PAAEG) derivatives with poly(ethylene glycol) (PEG) molecular weight of 400-010000 was studied. Amide groups of polya...
To enhance the impact strength of polyamide 6, hydrolytic polymerization modification by the polyaminoamide-g-poly(ethylene glycol) (PAAEG) derivatives with poly(ethylene glycol) (PEG) molecular weight of 400-010000 was studied. Amide groups of polya...
2009, 27(3): 351-358
Abstract:
Thermosetting acrylic coatings were prepared by using carboxyl acid group-containing acrylic oligomer and curing with titanium-oxo-clusters which were first pre-hydrolyzed from titanium n-butoxide. The curing ability of the titanium-oxo-cluster was e...
Thermosetting acrylic coatings were prepared by using carboxyl acid group-containing acrylic oligomer and curing with titanium-oxo-clusters which were first pre-hydrolyzed from titanium n-butoxide. The curing ability of the titanium-oxo-cluster was e...
2009, 27(3): 359-366
Abstract:
Poly(2-hydroxyethyl methacrylate) (PHEMA) and poly(2-hydroxyethyl methacrylate-co-sodium methacrylate) [P(HEMA-co-SMA)] hydrogels with different compositions were prepared to be used as intravaginal rings, and their gelation time, water content, mech...
Poly(2-hydroxyethyl methacrylate) (PHEMA) and poly(2-hydroxyethyl methacrylate-co-sodium methacrylate) [P(HEMA-co-SMA)] hydrogels with different compositions were prepared to be used as intravaginal rings, and their gelation time, water content, mech...
2009, 27(3): 367-374
Abstract:
The monomer reactivity ratios of free radical copolymerization of styrene and methyl methacrylate in carbon dioxide at vapor-liquid equilibrium state (vlCO2) at 65°C and under 7.5-8.5 MPa were measured. The experimental results showed that, in compar...
The monomer reactivity ratios of free radical copolymerization of styrene and methyl methacrylate in carbon dioxide at vapor-liquid equilibrium state (vlCO2) at 65°C and under 7.5-8.5 MPa were measured. The experimental results showed that, in compar...
2009, 27(3): 375-380
Abstract:
A mild and facile way was used to prepare poly(nitriloethylenenitrilovinylene)-grafted multi-walled carbon nanotubes (MWCNTs-g-PNENV) nanocomposites via the “grafting to” method. The MWCNTs-g-PNENV nanocomposites are well dispersible in polar solvent...
A mild and facile way was used to prepare poly(nitriloethylenenitrilovinylene)-grafted multi-walled carbon nanotubes (MWCNTs-g-PNENV) nanocomposites via the “grafting to” method. The MWCNTs-g-PNENV nanocomposites are well dispersible in polar solvent...
2009, 27(3): 381-386
Abstract:
Self-vulcanizing blends of phenol hydroxy silicone rubber (PHSR) and fluoroelastomer (FPM) were prepared. Vulcanized rubbers with lower glass transition temperature (Tg) were successfully obtained. The results of dynamic mechanical analysis (DMA) sho...
Self-vulcanizing blends of phenol hydroxy silicone rubber (PHSR) and fluoroelastomer (FPM) were prepared. Vulcanized rubbers with lower glass transition temperature (Tg) were successfully obtained. The results of dynamic mechanical analysis (DMA) sho...
2009, 27(3): 387-392
Abstract:
Biopolymer chitosan was used to modify the mechanical properties of soluble eggshell membrane protein (SEP) films. The SEP/chitosan blend films were prepared by solution casting from 10% aqueous acetic acid. Tensile strength and elongation at break o...
Biopolymer chitosan was used to modify the mechanical properties of soluble eggshell membrane protein (SEP) films. The SEP/chitosan blend films were prepared by solution casting from 10% aqueous acetic acid. Tensile strength and elongation at break o...
2009, 27(3): 393-398
Abstract:
Polypropylene (PP)/multi-walled carbon nanotube (MWCNT)/calcium carbonate (CaCO3) composites are prepared by melt mixing using two types of CaCO3 of different sizes. The electrical resistivities of the composites with the two types of CaCO3 are all l...
Polypropylene (PP)/multi-walled carbon nanotube (MWCNT)/calcium carbonate (CaCO3) composites are prepared by melt mixing using two types of CaCO3 of different sizes. The electrical resistivities of the composites with the two types of CaCO3 are all l...
2009, 27(3): 399-405
Abstract:
The living cationic polymerization of 4-[2-(tert-butyldimethylsiloxy)ethyl]styrene (TBDMES) was studied in methylcyclohexane (MeChx)/methylchloride (MeCl) (50/50 V/V) solvent mixture at -80°C. The initiator 1,1-diphenylethylene (DPE) capped 2-chloro-...
The living cationic polymerization of 4-[2-(tert-butyldimethylsiloxy)ethyl]styrene (TBDMES) was studied in methylcyclohexane (MeChx)/methylchloride (MeCl) (50/50 V/V) solvent mixture at -80°C. The initiator 1,1-diphenylethylene (DPE) capped 2-chloro-...
2009, 27(3): 407-414
Abstract:
The effects of the chain length, active end group and concentration on the association of living polystyryllithium (PS-Li+) chains in benzene were examined by a combination of static and dynamic laser light scattering in a cuvette equipped with a hig...
The effects of the chain length, active end group and concentration on the association of living polystyryllithium (PS-Li+) chains in benzene were examined by a combination of static and dynamic laser light scattering in a cuvette equipped with a hig...
2009, 27(3): 415-426
Abstract:
Bioactive SiO2-CaO-P2O5 gel (BAG) nanoparticles with 40 nm in diameter were synthesized by the sol-gel route and further modified via the ring-opening polymerization of lactide on the surface of particles. Surface modified BAG (mBAG) was introduced i...
Bioactive SiO2-CaO-P2O5 gel (BAG) nanoparticles with 40 nm in diameter were synthesized by the sol-gel route and further modified via the ring-opening polymerization of lactide on the surface of particles. Surface modified BAG (mBAG) was introduced i...
2009, 27(3): 427-433
Abstract:
Anionic polymerization of methyl methacrylate (MMA), n-butyl methacrylate (nBMA) and glycidyl methacrylate (GMA) initiated by nBuCu(NCy2)Li (1) in tetrahydrofuran (THF) at -50°C to-10°C was investigated. It was found that the polymerization of MMA an...
Anionic polymerization of methyl methacrylate (MMA), n-butyl methacrylate (nBMA) and glycidyl methacrylate (GMA) initiated by nBuCu(NCy2)Li (1) in tetrahydrofuran (THF) at -50°C to-10°C was investigated. It was found that the polymerization of MMA an...
2009, 27(3): 435-445
Abstract:
The service life of a polyolefin product depends to large extent on the type and amount of the antioxidants added. During the manufacturing, storage and use of the product the antioxidants are depleted by physical processes and chemical degradation, ...
The service life of a polyolefin product depends to large extent on the type and amount of the antioxidants added. During the manufacturing, storage and use of the product the antioxidants are depleted by physical processes and chemical degradation, ...
