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1998 Volume 16 Issue 4
1998, 16(4): 289-291
Abstract:
1998, 16(4): 292-296
Abstract:
Silica-bound mercaptoselenaether-containing silsesquioxane and its plat-inum or rhodium complex were synthesized from γ-(2,3-epithiopropyl) propyltrimethoxysi-lane via ring-opening reaction with bis(2-hydroxyethyl) sclenide, followed by hydrolysisand...
Silica-bound mercaptoselenaether-containing silsesquioxane and its plat-inum or rhodium complex were synthesized from γ-(2,3-epithiopropyl) propyltrimethoxysi-lane via ring-opening reaction with bis(2-hydroxyethyl) sclenide, followed by hydrolysisand...
1998, 16(4): 297-303
Abstract:
Ring-opening polymerization of ε-caprolactone (CL) catalyzed bylanthanocenes, O(C2H4C5H3CH3)22YCl (Cat-YCl) and Me2Si[(CH3)3SiC5H3]2NdCl(Cat-NdCl) has been carried out for the first time. It has been found that both yttroceneand neodymocene are very ...
Ring-opening polymerization of ε-caprolactone (CL) catalyzed bylanthanocenes, O(C2H4C5H3CH3)22YCl (Cat-YCl) and Me2Si[(CH3)3SiC5H3]2NdCl(Cat-NdCl) has been carried out for the first time. It has been found that both yttroceneand neodymocene are very ...
1998, 16(4): 304-309
Abstract:
The copolymers of chloroethyl methacrylate (CMA), glycidyl methacry-late (GMA), and methyl methacrylate (MMA) were synthesized in benzene solution. Theirbreadths of the molecular weight distributions are 2.1 and 2.3, respectively The ther-mal stabili...
The copolymers of chloroethyl methacrylate (CMA), glycidyl methacry-late (GMA), and methyl methacrylate (MMA) were synthesized in benzene solution. Theirbreadths of the molecular weight distributions are 2.1 and 2.3, respectively The ther-mal stabili...
1998, 16(4): 310-315
Abstract:
The photoinitiating system composed of 1-ethyl-3'-methylthiacyanine bro-mide (C-I), 2-chlorohexaarylbiimidazole (o-Cl-HABI) and 3-mercapto-4-methyl-4H-1, 2, 4-triazole (MTA), which act as sensitizer, initiator and hydrogen-donor respectively, can beu...
The photoinitiating system composed of 1-ethyl-3'-methylthiacyanine bro-mide (C-I), 2-chlorohexaarylbiimidazole (o-Cl-HABI) and 3-mercapto-4-methyl-4H-1, 2, 4-triazole (MTA), which act as sensitizer, initiator and hydrogen-donor respectively, can beu...
1998, 16(4): 316-326
Abstract:
Poly(arylene ether diketone)s were prepared by the aromatic nucleophilicdisplacement reaction of 4,4'-difluorobenzil with different bisphenols in the presence of an-hydrous potassium carbonate in diphenylsulfone at elevated temperature. The polymerso...
Poly(arylene ether diketone)s were prepared by the aromatic nucleophilicdisplacement reaction of 4,4'-difluorobenzil with different bisphenols in the presence of an-hydrous potassium carbonate in diphenylsulfone at elevated temperature. The polymerso...
1998, 16(4): 327-331
Abstract:
Association behavior of ethylene vinyl acetate (EVA) copolymer in foursolvents 1, 2-dichloroethane (DCE), cyclohexane (CYH), xylene (XYL) and chloroform(CF) has been investigated by dilute solution viscometry The critical association concen-tration (...
Association behavior of ethylene vinyl acetate (EVA) copolymer in foursolvents 1, 2-dichloroethane (DCE), cyclohexane (CYH), xylene (XYL) and chloroform(CF) has been investigated by dilute solution viscometry The critical association concen-tration (...
1998, 16(4): 332-338
Abstract:
The glassy transition of the polyethylene terephthalate (PET) sampleswhich have been subjected to solvent induced crystallization (SINC) was investigated bymodulated differential scanning calorimetry (MDSC) and density measurement. The dif-ferential ...
The glassy transition of the polyethylene terephthalate (PET) sampleswhich have been subjected to solvent induced crystallization (SINC) was investigated bymodulated differential scanning calorimetry (MDSC) and density measurement. The dif-ferential ...
1998, 16(4): 339-344
Abstract:
The effect of γ-ray irradiation on the mechanical properties of high densitypolyethylene(HDPE) filled with sericite-tridymite-cristobalite(STC) was studied. The ex-perimental results show that γ-ray irradiation can improve the affinity between HDPE a...
The effect of γ-ray irradiation on the mechanical properties of high densitypolyethylene(HDPE) filled with sericite-tridymite-cristobalite(STC) was studied. The ex-perimental results show that γ-ray irradiation can improve the affinity between HDPE a...
1998, 16(4): 345-350
Abstract:
Water swelling rubber (WSR) was prepared by reaction blending SBR andsodium polyacrylate (PAANa). The existing states of water in the WSR was studied bymeans of DSC and TG. It was found that water exists in three states: nonfreezing water,bound freez...
Water swelling rubber (WSR) was prepared by reaction blending SBR andsodium polyacrylate (PAANa). The existing states of water in the WSR was studied bymeans of DSC and TG. It was found that water exists in three states: nonfreezing water,bound freez...
1998, 16(4): 351-355
Abstract:
Well-defined nonionic hydrophilic ω-acryloyl poly(ethylene oxide) macro-monomer (PEO-A) has been prepared by living anionic polymerization of ethylene oxidewith diphenyl methyl potassium as the initiator and acryloyl chloride as the reaction termi-na...
Well-defined nonionic hydrophilic ω-acryloyl poly(ethylene oxide) macro-monomer (PEO-A) has been prepared by living anionic polymerization of ethylene oxidewith diphenyl methyl potassium as the initiator and acryloyl chloride as the reaction termi-na...
1998, 16(4): 356-361
Abstract:
The optical α-amino acids were synthesized under room temperature byalkylation of N-(diphenyl methylene) glycine t-butyl ester under polymer-supported phasetransfer conditions using polymer-supported cinchonine (or quinine) alkaloids as chiralphase t...
The optical α-amino acids were synthesized under room temperature byalkylation of N-(diphenyl methylene) glycine t-butyl ester under polymer-supported phasetransfer conditions using polymer-supported cinchonine (or quinine) alkaloids as chiralphase t...
1998, 16(4): 362-369
Abstract:
In the course of investigating the catalytic behavior of metal complexes forring opening metathesis polymerization of cycloolefins, metathesis, hydroformylation andselective hydrogenation of olefins experimental results time and again indicate the pr...
In the course of investigating the catalytic behavior of metal complexes forring opening metathesis polymerization of cycloolefins, metathesis, hydroformylation andselective hydrogenation of olefins experimental results time and again indicate the pr...
1998, 16(4): 370-376
Abstract:
Seven new binuclear titanocenes with different linking bridges, unsubsti-tuted or substituted on the Cp rings, were synthesized and tested for their effect on ethylenepolymerization in the presence of MAO. The polyethylenes thus obtained had broad MW...
Seven new binuclear titanocenes with different linking bridges, unsubsti-tuted or substituted on the Cp rings, were synthesized and tested for their effect on ethylenepolymerization in the presence of MAO. The polyethylenes thus obtained had broad MW...
1998, 16(4): 377-380
Abstract:
The synthesis of rod-coil diblock copolymers was achieved for the firsttime by TEMPO-mediated "living" free radical polymerization of styrene and 2,5-bis[(4-methoxyphenyl)oxycarbonyl]styrene(MPCS). The block architecture of the two diblockcopolymers ...
The synthesis of rod-coil diblock copolymers was achieved for the firsttime by TEMPO-mediated "living" free radical polymerization of styrene and 2,5-bis[(4-methoxyphenyl)oxycarbonyl]styrene(MPCS). The block architecture of the two diblockcopolymers ...
