最新刊期
      卷 ， 期 6 ， 1985

        Research Article

      • CHEN Ke-jiang,SHEN Ye,LI Hui-lin,XU Xi
        Issue 6, Pages: 401-407(1985)
        摘要：The ultrasonic degradation of hydroxyethyl cellulose (HEC) and poly(ethylene oxide) (PEO) in aqueous solution, and copolymerization of HEC with PEO were studied respectively. The structure of the copolymer was identified by DTA, IR, MS, X-ray diffraction and polarizing microscope and the copolymer prepared is a block one mainly. The copolymer, formed by irradiating 0.5% HEC/PEO aqueous solution for a period of 10 min. at 25℃ and 18.2 kHz with 2.5 A input current on reversed main circuit, amounts to 55.07%.  
          
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        发布时间：2021-03-19
      • CHEN Yi-yong,MAO Xue-qin,ZHU Dong-wei,ZHENG Ping
        Issue 6, Pages: 408-415(1985)
        摘要：Macro-porous hum,ie acid resins (HAR) bearing-N=N-bond or ester and／or ether bond were prepared by erosslinked polystyrene derivatives and humic aeids．Azo type HAR (AHAR) prepared under．HA/PSNH2 0.7—1.0 (wt．ratio) and coupling pH 13 conditions has the best adsorption properties for metal ions．The adsorption quantities for Cu2+ of ester and/or ether type HAR (EHAR) are increasing with increasing reae-tion time of EHAR formation．The structures of HAR were examined by IR-spectra．Adsorption capacities of AHAR for Cd2+，Ni2+，Mn2+，Cu2+，Co3+，Zn2+ are 1.01，0.60，0.59，0.56，0.55，0.53 mmol ion／g resin．respectively．The distribution coeffic-ients of metal ions on AHAR are Cu2+(8．7×103)>Cd2+(3.8×102)>Zn2+(2.4×102)>Ni2+(1.8×102)>Mn2+(4.9×10),respectively．Cu2+，Cd2+，Ni2+，Mn2+ions can be quantitatively adsorbed and eluated by 1N HNO3 with AHAR．The resin can be regenerated and reused．The trace heavy metal ions in four kinds of nature wa-ter and tap water have been determined．  
          
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        发布时间：2021-03-19
      • HUANG Zu-xiu,CHEN Hui-ying,LU Bu-xing,TIAN Xiao-qian,Peng Xin-de
        Issue 6, Pages: 416-421(1985)
        摘要：Graft polymerization of sodium salt of 6-sulfohexyl methacrylate (SSHMA) or sodium salt of 8-sulfo-octyl methacrylate (SSOMA) onto segmented polyether urethane (SPEU) film was investigated.Graft reaction included two steps: f irst,hydroperoxide group was introduced onto the surface of SPEU through photo-oxidation in the presence of hydrogen peroxide, then it was reduced by ferrous ion to initiate sulfoalkyl methacrylate grafting on SPEU surface. The effect of the concentration of sulfoalkyl methacrylate, the concentration of ferrous ion and reaction temperature on the graft polymerization was discussed. The grafted films posses higher percentage of water absorption and anticoagulant activity than the ungrafted SPEU film. The salient micrographs on surface of grafted film were taken by scanning electronic microscope.  
          
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      • ZENG Han-min,GUO Xi-kun,PAN Chun-hua
        Issue 6, Pages: 422-428(1985)
        摘要：By using the infrared spectroscopy，elemental analysis and mensu-ration of specific surface ere techniques，we have investigated the earbonizing-aetivating mechanism of the hollow activated carbon fiber SNACF．Experimental results have demonstrated that the mechanism features of preparation of SNACF are remarkably distinct from those obtained from NACF．In the ease of SNACF．during the carbonization process thiocycanic aeid gas (2060--2075 cm-1 peak) and tar-like substance with —SO3H groups were released．Moreover，the released amount of gas containing N (HCN，NH3) deerea-ses while its telaese temperature is higher as compared with those of NACF．During the activating process more specific surface can be obtained，and the time of activation can be decreased．These differences are closely associated with the texture features of precusors used and thier chemical composition．  
          
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        发布时间：2021-03-19
      • ZENG Han-min,GUO Xi-kun
        Issue 6, Pages: 429-434(1985)
        摘要：The texture and surfree chemical strneture features of hollow activeted carbon fiber SNACF have been investigated by using techniques TEM, SEM, XPS, IR, X-ray diffraction and chemical titration etc. The experimental results showed that the SNACF is an activated carbon fiber eontainning N and S possessing porosity and microcrystal line-carbon structure with basic functional groups and acid functional groups -COOH phenolic-Oil etc, as well as high- oxidized sulfur such as sulphonic acid functional groups on its surface.  
          
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      • HAN Xiao-zu,CHEN En-zhi
        Issue 6, Pages: 435-439(1985)
        摘要：The alternating copolymerization of chloroprene (CP) with methyl acrylate (MA) in the presence of ethyl aluminium sesquichloride (AlEt1.5 Cl1.5) and initiator Mn2(CO)10/CCl4 has been studied.The rate of eoplymerization is proportional to [MA…al]1/2, where MA…al represents the MA-AlEt1.5Cl1.5 complex and 9 is the rate of initiation. All the kinetic data are consistent with the cross-propagation mechanism of alternating copolymerization. The propagation process -CP + MA is markedly accelerated by Al Et1.5Cl1.5,com-pared with 11.1 and 0.078 without it. Chain transfer to CBr4has been observed and the apropriate kenetic parame-ters evaluated.  
          
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      • Jin Shi-jiu,CU Ju-ying
        Issue 6, Pages: 440-444(1985)
        摘要：o-and p-Hydroxymethyl phenyl glycidyl ethers were synthesized as model compounds of hydroxymethyl diglycidyl ether bisphenol A type epoxy resin. It was reported to give more rapid cures at lower temperatures with amines for having a hydroxymethyl activating group. The reactions of these compounds with methylene dianilineniline-(MDA) were investigated by means of DTA and IE for the discussion of "anchimeric effect" suggested by Schwarzer.  
          
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      • BI Xian-tong,YAO You-xin,DA You-xian,YOUNG Qi-yan,QIAN Ren-yuan
        Issue 6, Pages: 445-451(1985)
        摘要：The high electrical conductivity and stability of electrochemical oxidative polypyr-roles are potentially attractive systems．So far．the real chemical structure is still ob-scure to us．The chemical structure and electrical properties of polypyrroles prepared by elec-trcIchemical oxidation in different sollvents and supporting electrolytes with various elec-trodes have been observed．Structure charaeterization was done by IR．XPS，X-ray diffraction，elemental analysis and electron microscopy．The room temperature con-ductivities of the fi]ms inereased 10—20 times after exposure to air．The temperature dependenee of conductivity was measured byVSC method that showed the metMlie ehara-cter of the polymer．IR spectra showed no N-H absorption，bult CH2 absorption ap-peared．We suggest there are pyrrolidone end groups in the polymer chains，and bran-ching or crosslinking happend to the polymer．XPS of the films showed that the dis-tribution of positive charge of pyrrole ring are different between BF-4 doped and other anion doped samples．The films are amorphous with small degree of crastallinity．The films showed electric switching effect．  
          
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        Research Bulletin

      • YU Guang-qian,Chen Wen-qi,WANG Yu-ling,GUAN Hong
        Issue 6, Pages: 452-456(1985)
        摘要：C6H5ONdCl2 · nTHF (THF= n = 0, 1, 2) and NdCl3 · HOAr (HOAr =combined with aluminium alkyls are highly active for butadiene polymerization.In C6H5 ONdCl2 · nTHF-AlR3 system the activities increase with the increase in the coordination number of THF. In NdCl3 · HOAr-AlR3 the polymerization activities of variousphenols are in the following order:The polymerization rate is the first order with respect to the monomer concentration in C6H5ONdCl2 · 2THF-Ali-Bu2H. The plot of the conversion vs polymerization time is linear. The [n] of polymer decreases with the increase in the conversion of butadiene.  
          
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      • WU Mei-yu,YONG Zhong-gen
        Issue 6, Pages: 457-459(1985)
        摘要：A methof for molecular weight determination of polyether polyols has been developed using 1H-NMR analysis of ester-H groups (-COOCH2-). Polyethylene glyol (PEG) is esterified directly in the sample tube. Then, the number average molecular weight of PEG can be calculated by measuring the ratio of 1H-NMR absorptions of mo-nomeric units ((CH2CH2O)n-1) in the polymeric structure to those of ester-H. This method is simple and time-saving. It excludes the effect of trace water on molecular weight determination. The quantitative resultsobtained by above-mentioned method could be satisfactory.  
          
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      • YANG Ji-po,WANG Fo-song
        Issue 6, Pages: 460-463(1985)
        摘要：This paper describes the pyrolytic reaction of polyacetylene (PA) prepared with titanium and lanthanide elements based catalyst systems before and after thermo-iso-merization by PGC. A parameter suitable to compare difference in molecular structure of PA's has been suggested and applied to study. Under the given pyrolytic conditions, cis- and trans-PA showed quite similar pyrogram. A smallr change in h1/h5 ratio has been found for Ln-PA than that for Ti-PA with the increase of aging time. These results demonstrates that Ln-PA has better agnig property than Ti-PA.  
          
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      • Luo Chuan-qiu,ZHENG Jing-yi,WANG Ying-kang
        Issue 6, Pages: 464-466(1985)
        摘要：The interation parameter x for poly-(ε-caprolaetone) -polycarbonate blends containing 95-30% PCL has been measured by inverse gas chromatographic procedure. The similar reasonable value of x was also obtained from the slope of the plot of (Tm0 - Tm) / φ3 snsrev φ3 by DSC. The negative values of the determined x for the blends indicate that significant intermolecular interactions exist between the components of the mixtures and contribute to the compatibility of these blends.  
          
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      • ZHANG Hong-zhi,MENG Xian-sheng,FENG Xin-de
        Issue 6, Pages: 467-470(1985)
        摘要：The living chains were obtained in the bulk tetrahydrofuran (THF)-propylene oxide (PO) (10-20 wt. %) copolymerization initiated by adipoyl chloride (AC)-AgC104([AC]0=0.02-0.09mol.l-1) catalyst at -10-0℃ without chain termination and transfer reactions. Estimation of reactivity ratios yielded values of 0.8±0.2 and 0.08 + 0.03 for THF and PO, respectively. The functionality of living chains with 10% PO in feed is close to 2. Four different telechelic THF-PO eopolymers with amino or hydroxyl end-groups [P(THF-co-PO)R,where R=-NHBu,-NHPh,-NEt2 or-OH] were synthesized.  
          
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