Kinetics and mechanism of thermal polymerization of hexafluoropropylene under high pressures

被引：20

作者：

Zharov, A. A. ^{[1
]}

Guzyaeva, I. A. ^{[1
]}

机构：

[1] Russian Acad Sci, ND Zelinsky Inst Organ Chem, Moscow 119991, Russia

来源：

RUSSIAN CHEMICAL BULLETIN | 2010年 / 59卷 / 06期

关键词：

hexafluoropropylene; polymerization; thermal polymerization; polyhexafluoropropylene; high pressure; thermal initiation; polymerization mechanism; activation energy; activation volume; NMR spectroscopy; IR spectroscopy; X-ray spectroscopy;

D O I：

10.1007/s11172-010-0225-x

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The basic kinetic parameters of thermal polymerization of hexafluoropropylene, namely, general rate constants, degree of polymerization, and their temperature and pressure dependences in the range of 230-290 A degrees C and 2-12 kbar (200-1200 MPa) were determined. The activation energy (E (act) = 132 +/- 4 kJ mol(-1)) and activation volume (Delta V (0) (not equal) = -27 +/- 1 cm(3) mol(-1)) were calculated. The activation energy of thermal initiation of polymerization was estimated. The reaction scheme based on the assumption about a biradical mechanism of polymerization initiation was proposed.

引用

页码：1225 / 1231

页数：7

共 16 条

[1]

BERLIN AA, 1973, KINETICHESKII METOD, P76

[2]

BROWN DW, 1971, J POLYM SCI POL CHEM, V9, P1999

[3]

ELYANOV BS, 1980, REV PHYS CHEM JPN, V50, P169

[4]

JENKINS AD, 1974, REACTIVITY MECH STRU, P613

[5]

KURBATOV VA, 1987, USP KHIM+, V56, P865

[6]

LOWRY RE, 1972, J POLYM SCI POL CHEM, V4, P2229

[7]

MATSUMOTO K, 1991, ORGANIC SYNTHESIS HI, P15

[8]

Moskvin DI, 2004, RUSS J PHYS CHEM+, V78, P731

[9]

MOSKVIN DI, 2007, DOKL AKAD NAUK+, V416, P216

[10]

MOSKVIN DI, 2005, 8 MOL SHKOL K ORG KH, P144

← 1 2 →