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1996 Volume 14 Issue 4
1996, 14(4): 289-294
Abstract:
A new type of selenious polymer, silica-bound polybispropoxyethyl-selenidesilsesquioxane,and its platinum complex were synthesized from bis-allyloxyethyl selenide via hydrosily-lation with triethoxysilane, followed by immobilized on fumed silica, and...
A new type of selenious polymer, silica-bound polybispropoxyethyl-selenidesilsesquioxane,and its platinum complex were synthesized from bis-allyloxyethyl selenide via hydrosily-lation with triethoxysilane, followed by immobilized on fumed silica, and...
1996, 14(4): 295-303
Abstract:
A series of novel polysiloxane polyurea-urethane blockcopolymers based on methy-lene bis (p-phenylisocyanate (MDI), sodium-s-1, 2-dihydroxy propyl sulphonate (SDPS) andaminopropyl-terminated polydimethylsiloxane (ATPS) was synthesized with varying le...
A series of novel polysiloxane polyurea-urethane blockcopolymers based on methy-lene bis (p-phenylisocyanate (MDI), sodium-s-1, 2-dihydroxy propyl sulphonate (SDPS) andaminopropyl-terminated polydimethylsiloxane (ATPS) was synthesized with varying le...
1996, 14(4): 304-310
Abstract:
The selective water plugging agent was prepared by heating the blends of the polyacry-lamide inverse latex, modified urea formaldehyde resin, crosslinking agent and catalysts.The results show that using different types of polymers and additives or ch...
The selective water plugging agent was prepared by heating the blends of the polyacry-lamide inverse latex, modified urea formaldehyde resin, crosslinking agent and catalysts.The results show that using different types of polymers and additives or ch...
1996, 14(4): 311-317
Abstract:
In this paper, the effects of shear rate on the intrinsic viscosity measurement of partiallyHydrolysed Polyacrylamide (HPAM) in salt solution were studied with homemade multi-bulb viscometer and low shear rate rheometer. The critical shear rate of HP...
In this paper, the effects of shear rate on the intrinsic viscosity measurement of partiallyHydrolysed Polyacrylamide (HPAM) in salt solution were studied with homemade multi-bulb viscometer and low shear rate rheometer. The critical shear rate of HP...
1996, 14(4): 318-323
Abstract:
The structural parameters of the aggregated state of polyamide (PA)-1010 annealedat various temperatures were computed by means of the desmearing intensity from SmallAngle X-ray Scattering (SAXS) measurements and by using the concept of the distance ...
The structural parameters of the aggregated state of polyamide (PA)-1010 annealedat various temperatures were computed by means of the desmearing intensity from SmallAngle X-ray Scattering (SAXS) measurements and by using the concept of the distance ...
1996, 14(4): 324-329
Abstract:
D, L)-Lactide (LA) was first polymerized with one component of rare earth cata-lysts [Nd(naph)3, Nd(oct)3, Nd(O-iPr)3, Nd(AcAc)3, Y(AcAc)3, Sm(AcAc)3, Er(AcAc)3)]respectively in solution and in melt state. The effects of [Cat]/[LA] molar ratio, solve...
D, L)-Lactide (LA) was first polymerized with one component of rare earth cata-lysts [Nd(naph)3, Nd(oct)3, Nd(O-iPr)3, Nd(AcAc)3, Y(AcAc)3, Sm(AcAc)3, Er(AcAc)3)]respectively in solution and in melt state. The effects of [Cat]/[LA] molar ratio, solve...
STRUCTURAL ANALYSIS AND ENVIRONMENTAL STABILITY OF POLYFLUORINATED GROUP SUBSTITUTED POLYTHIOPHENES*
1996, 14(4): 330-337
Abstract:
Electrochemical polymerization of 3-fluoroalkoxy and 3-fluoroether thiophenes givespolymers with relatively high molecular weights and good processibility. Investigationof these polymers by means of GPC indicates that an increase in the number of flu...
Electrochemical polymerization of 3-fluoroalkoxy and 3-fluoroether thiophenes givespolymers with relatively high molecular weights and good processibility. Investigationof these polymers by means of GPC indicates that an increase in the number of flu...
1996, 14(4): 338-345
Abstract:
The biodegradability of Aspergillus niger (A. niger), Mucor (M-305) and Trichoderma(T-311) strains on regenerated cellulose films in media was investigated. The results showedthat T-311 strain isolated from soil adhered on the cellulose film fragment...
The biodegradability of Aspergillus niger (A. niger), Mucor (M-305) and Trichoderma(T-311) strains on regenerated cellulose films in media was investigated. The results showedthat T-311 strain isolated from soil adhered on the cellulose film fragment...
1996, 14(4): 346-354
Abstract:
Films were prepared from mixtures of copolymers of 4-nitro-4'- [N- methylacryloyloxyethyl,N'-ethyl] amino azobenzene with glycidyl methacrylate (chromophore content: 6 mol%) andcopolymers containing anhydride units, which was obtained by the reaction...
Films were prepared from mixtures of copolymers of 4-nitro-4'- [N- methylacryloyloxyethyl,N'-ethyl] amino azobenzene with glycidyl methacrylate (chromophore content: 6 mol%) andcopolymers containing anhydride units, which was obtained by the reaction...
1996, 14(4): 355-361
Abstract:
A silica-supported cross-linked poly(maleic acid -co- styrene)-platinum complex (PMS-Pt) has been prepared and found to be active in the hydrogenation of p-cresol undermild conditions (303-323K, 1.01×10~5Pa). In this hydrogenation system water serves...
A silica-supported cross-linked poly(maleic acid -co- styrene)-platinum complex (PMS-Pt) has been prepared and found to be active in the hydrogenation of p-cresol undermild conditions (303-323K, 1.01×10~5Pa). In this hydrogenation system water serves...
1996, 14(4): 362-367
Abstract:
Three A-shaped nitropyrimidine derivatives with benzyl or furfuryl as bridge havebeen synthesized. They possess shorter absorption wavelengths (λcut-off))-46 esu). The second order nonlinear optical coefficient d33 ofpoled BNPMOPMDA/PMMA doped film i...
Three A-shaped nitropyrimidine derivatives with benzyl or furfuryl as bridge havebeen synthesized. They possess shorter absorption wavelengths (λcut-off))-46 esu). The second order nonlinear optical coefficient d33 ofpoled BNPMOPMDA/PMMA doped film i...
1996, 14(4): 368-375
Abstract:
The polysiloxane containing propylene carbonate side group and several lithium poly-meric salts were synthesized. The structure were confirmed by IR, NMR and XPS. Theblending systems of polysiloxane containing propylene carbonate group with different...
The polysiloxane containing propylene carbonate side group and several lithium poly-meric salts were synthesized. The structure were confirmed by IR, NMR and XPS. Theblending systems of polysiloxane containing propylene carbonate group with different...
1996, 14(4): 376-379
Abstract:
Polypropylene (PP) microporous film prepared by biaxial stretching of isotactic PPis treated with non-solvent liquid at room temperature. The dimension of the film maychange after the treatment. The degree of area contraction of PP film is dependent ...
Polypropylene (PP) microporous film prepared by biaxial stretching of isotactic PPis treated with non-solvent liquid at room temperature. The dimension of the film maychange after the treatment. The degree of area contraction of PP film is dependent ...
1996, 14(4): 380-384
Abstract:
The organic salts as initiators [A+B-:Ph3C+ClO4-, Ph3C+SbCl6-, (-)Sp+ClO4- and(-)(Sp)2+3(ClO4)3] and catalysts [A+B-:(+)CSA, A+B-:Ph3C+(+)CSA- and(-)Sp+(+)CSA] are prepared and characterized by specific rotation. The asymme-trically stereoselective i...
The organic salts as initiators [A+B-:Ph3C+ClO4-, Ph3C+SbCl6-, (-)Sp+ClO4- and(-)(Sp)2+3(ClO4)3] and catalysts [A+B-:(+)CSA, A+B-:Ph3C+(+)CSA- and(-)Sp+(+)CSA] are prepared and characterized by specific rotation. The asymme-trically stereoselective i...
