THERMAL-DISSOCIATION OF URETHANES STUDIED BY FTIR SPECTROSCOPY

被引：37

作者：

JOEL, D ^{[1
]}

HAUSER, A ^{[1
]}

机构：

[1] KAI EV,CTR MACROMOLEC CHEM,D-12489 BERLIN,GERMANY

来源：

ANGEWANDTE MAKROMOLEKULARE CHEMIE | 1994年 / 217卷

关键词：

D O I：

10.1002/apmc.1994.052170116

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The thermal dissociation of urethane groups has been studied by FTIR spectroscopy depending on the type of diisocyanate, the structure of the hard segment and the composition of polyurethane. Independent of the composition and the structure, the dissociation started between 150 and 160-degrees-C. Consequently, the dissociation sets in at temperatures below the melting temperature of the model hard segments, i.e. already in the solid state. The NCO absorption band reaches its maximum intensity between 180 and 190-degrees-C. This result opposes the references in literature suggesting a four-centre reaction for transurethanization.

引用

页码：191 / 199

页数：9

共 11 条

[1] SYNTHESIS AND DSC STUDY OF MODEL HARD SEGMENTS FROM DIPHENYL METHANE DIISOCYANATE AND BUTANE DIOL [J].

CAMBERLIN, Y ;

PASCAULT, JP ;

LETOFFE, JM ;

CLAUDY, P .

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 1982, 20 (02) :383-392

[2] STRUCTURE AND PROPERTIES OF MODEL COMPOUNDS FOR SEGMENT POLYURETHANE ELASTOMERS [J].

EISENBACH, CD ;

NEFZGER, H ;

BAUMGARTNER, M ;

GUNTER, C .

BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1985, 89 (11) :1190-1197

[3] DEGRADATION BEHAVIOR OF POLYURETHANE STUDIED BY LINEAR TEMPERATURE PROGRAMMED PYROLYSIS FTIR SPECTROSCOPY [J].

HERZOG, K .

MAKROMOLEKULARE CHEMIE-MACROMOLECULAR SYMPOSIA, 1991, 52 :307-312

[4] DIFFERENTIAL SCANNING CALORIMETRY ANALYSIS OF MORPHOLOGICAL-CHANGES IN SEGMENTED ELASTOMERS [J].

HESKETH, TR ;

VANBOGART, JWC ;

COOPER, SL .

POLYMER ENGINEERING AND SCIENCE, 1980, 20 (03) :190-197

[5] ON THE THERMAL DISSOCIATION OF ORGANIC COMPOUNDS .3. THE DISSOCIATION OF ESTER LINKAGE IN PHENYLCARBAMINIC ACID PHENYLESTER IN BUTYRIC ACID [J].

HOSHINO, T ;

MUKAIYAMA, T ;

HOSHINO, H .

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1952, 25 (06) :396-398

[6] IMPINGEMENT MIXING AND ITS EFFECT ON THE MICROSTRUCTURE OF RIM POLYURETHANES [J].

KOLODZIEJ, P ;

YANG, WP ;

MACOSKO, CW ;

WELLINGHOFF, ST .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1986, 24 (10) :2359-2377

[7]

LAWANDY SN, 1980, ELASTOMERICS, V112, P45

[8] POLYURETHANE REACTION INJECTION-MOLDING - PROCESS, MATERIALS, AND PROPERTIES [J].

LEE, LJ .

RUBBER CHEMISTRY AND TECHNOLOGY, 1980, 53 (03) :542-599

[9]

POHL G, 1993, PLASTE KAUTSCH, V40, P357

[10]

TIMM T, 1982, KAUT GUMMI KUNSTST, V35, P568

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