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1986 Volume 4 Issue 1
1986, 4(1): 1-7
Abstract:
The relationship between intrinsic viscosity[η] and yield strength [σγ] of SBR-1500 raw rubberwas studied. It was found that the critical molecular weight for yielding varied with temperature.The critical yield temperature of SBR--1500 is 18℃, which ...
The relationship between intrinsic viscosity[η] and yield strength [σγ] of SBR-1500 raw rubberwas studied. It was found that the critical molecular weight for yielding varied with temperature.The critical yield temperature of SBR--1500 is 18℃, which ...
1986, 4(1): 8-16
Abstract:
Proton decoupled, partially relaxed, Fourier-transform 50.3 MHz carbon-13 NMR in natural abundance was used to determine spin-lattice times (T1) and nuclear Overhauser enhancement fac-tors (NOE) of individual carbon of a serics of 1,2-polybutadienes ...
Proton decoupled, partially relaxed, Fourier-transform 50.3 MHz carbon-13 NMR in natural abundance was used to determine spin-lattice times (T1) and nuclear Overhauser enhancement fac-tors (NOE) of individual carbon of a serics of 1,2-polybutadienes ...
1986, 4(1): 17-23
Abstract:
The resin solution of NA capped‘PMR' type polyamide-imide was prepared from bicyclo [2.2.1]-hept-5-ene-2, 3-dicarboxylic acid ethyl ester,1, 2, 4-trimellitic acid-2-(or-1-) ethyl ester and 4,4'-methylenedianiline in ethanol. This resin solution is sp...
The resin solution of NA capped‘PMR' type polyamide-imide was prepared from bicyclo [2.2.1]-hept-5-ene-2, 3-dicarboxylic acid ethyl ester,1, 2, 4-trimellitic acid-2-(or-1-) ethyl ester and 4,4'-methylenedianiline in ethanol. This resin solution is sp...
1986, 4(1): 24-34
Abstract:
Liquid organosilane polmers have been synthesized by sodium coupling of diorganodichloro-silanes with diphenylmethylchlorosilane in toluene. These polysilanes can be formed into desiredshape by potting, casting or coating and crosslinked under ultrav...
Liquid organosilane polmers have been synthesized by sodium coupling of diorganodichloro-silanes with diphenylmethylchlorosilane in toluene. These polysilanes can be formed into desiredshape by potting, casting or coating and crosslinked under ultrav...
1986, 4(1): 35-42
Abstract:
A polymeric method was explored for the preparation of polyester-polyether multiblock copoly-mers using polyesters and polpethers as starting materials. The mechanism of the reaction and theeffect of the segment structure on it, the segment sequence ...
A polymeric method was explored for the preparation of polyester-polyether multiblock copoly-mers using polyesters and polpethers as starting materials. The mechanism of the reaction and theeffect of the segment structure on it, the segment sequence ...
THE OVERALL KINETICS OF FREE RADICAL (CO)POLYMERIZATION WITH HIGHLY DIFFUSION CONTROLLED TERMINATION
1986, 4(1): 43-53
Abstract:
The overall reaction rate kinetics of polymerization of diethyleneglycol dimethacrylate and copolymerization of it with styrene in bulk and in the presence of inert diluents were investigated. The results indicated that these reactions can be treated...
The overall reaction rate kinetics of polymerization of diethyleneglycol dimethacrylate and copolymerization of it with styrene in bulk and in the presence of inert diluents were investigated. The results indicated that these reactions can be treated...
1986, 4(1): 54-64
Abstract:
The melting behavior of poly(ethylene-alt-tetrafluoroethylene) γ-irradiated in air and vacuumwas studied by DSC. From the results of DSC and density measurements the equilibrium heat offusion, △AHom,and the density of the amorphous phase, ρα, of the ...
The melting behavior of poly(ethylene-alt-tetrafluoroethylene) γ-irradiated in air and vacuumwas studied by DSC. From the results of DSC and density measurements the equilibrium heat offusion, △AHom,and the density of the amorphous phase, ρα, of the ...
1986, 4(1): 65-71
Abstract:
Several polymer-supported palladium complex catalysts containing two different coordinating groups were prepared and the cooperative effect of the coordinating groups on the catalytic behaviors of polymer catalysts was studied. It was found that poly...
Several polymer-supported palladium complex catalysts containing two different coordinating groups were prepared and the cooperative effect of the coordinating groups on the catalytic behaviors of polymer catalysts was studied. It was found that poly...
1986, 4(1): 72-77
Abstract:
The 1H and 13C NMR spectra of polyether-polyurethancs (A) based on 4, 4'-diphenylmethanediisocyanate (MDI), N-methyl diethanolamine (MDEA), and polytetramethyleneoxide (PTMO)and the zwitterionomers derived from A with various degree of ionization was...
The 1H and 13C NMR spectra of polyether-polyurethancs (A) based on 4, 4'-diphenylmethanediisocyanate (MDI), N-methyl diethanolamine (MDEA), and polytetramethyleneoxide (PTMO)and the zwitterionomers derived from A with various degree of ionization was...
1986, 4(1): 78-83
Abstract:
The compositional heterogeneity has been studied for a series of PCL/MDI/BDO segmentedpolyurethanes. Their average hard segment content measured by NMR method was ranging from 17% to 42%. Macromolecules of segmented polyurethanes can be separated acc...
The compositional heterogeneity has been studied for a series of PCL/MDI/BDO segmentedpolyurethanes. Their average hard segment content measured by NMR method was ranging from 17% to 42%. Macromolecules of segmented polyurethanes can be separated acc...
1986, 4(1): 84-91
Abstract:
A series of liquid chloroprene-hydroxyethyl methacrylate copolymer (CP-HEMA) modifiedepoxy resin were prepared. The effects of CP-HEMA content, curing conditions on physical pro-perties of the modified system were examined. With IR and Viscoelastocur...
A series of liquid chloroprene-hydroxyethyl methacrylate copolymer (CP-HEMA) modifiedepoxy resin were prepared. The effects of CP-HEMA content, curing conditions on physical pro-perties of the modified system were examined. With IR and Viscoelastocur...
1986, 4(1): 92-99
Abstract:
The effects of Morpholine, N-methyl morpholine, and N-ethyl morpholine on methyl methacrylatepolytherization initiated with organic peroxides were studied. The polymerization rate Rp, theoverall activation energy of polymerization Ea, and the rate eq...
The effects of Morpholine, N-methyl morpholine, and N-ethyl morpholine on methyl methacrylatepolytherization initiated with organic peroxides were studied. The polymerization rate Rp, theoverall activation energy of polymerization Ea, and the rate eq...
1986, 4(1): 100-104
Abstract:
Active esters, 8-acryloyloxyquinoline (AQ) and 8--methacryloyloxyquinoline (MAQ) were synthe-sized and characterized. It was found that polymers of these two monomers can react with nucleophilicreagents such as amines or alcohols under mildcondition....
Active esters, 8-acryloyloxyquinoline (AQ) and 8--methacryloyloxyquinoline (MAQ) were synthe-sized and characterized. It was found that polymers of these two monomers can react with nucleophilicreagents such as amines or alcohols under mildcondition....
1986, 4(1): 105-108
Abstract:
Carboxylated poly-n-butyl acrylates were used as model polymeric dispersant. The effect ofpolymers on the dispersion of γ-Fe2O3 in cyclohexanone were studied through sedimentation testand rheological measurement. The polymers with strong anchoring gr...
Carboxylated poly-n-butyl acrylates were used as model polymeric dispersant. The effect ofpolymers on the dispersion of γ-Fe2O3 in cyclohexanone were studied through sedimentation testand rheological measurement. The polymers with strong anchoring gr...
