学术探索
学术期刊
新闻热点
数据分析
智能评审
立即登录
MECHANICAL DEGRADATION OF HIGH MOLECULAR-WEIGHT POLYMERS IN DILUTE-SOLUTION
被引:83
作者
:
YU, JFS
论文数:
0
引用数:
0
h-index:
0
机构:
UNIV MISSOURI,GRAD CTR MAT RES,ROLLA,MO 65401
YU, JFS
ZAKIN, JL
论文数:
0
引用数:
0
h-index:
0
机构:
UNIV MISSOURI,GRAD CTR MAT RES,ROLLA,MO 65401
ZAKIN, JL
PATTERSON, GK
论文数:
0
引用数:
0
h-index:
0
机构:
UNIV MISSOURI,GRAD CTR MAT RES,ROLLA,MO 65401
PATTERSON, GK
机构
:
[1]
UNIV MISSOURI,GRAD CTR MAT RES,ROLLA,MO 65401
[2]
UNIV MISSOURI,DEPT CHEM ENGN,ROLLA,MO 65401
来源
:
JOURNAL OF APPLIED POLYMER SCIENCE
|
1979年
/ 23卷
/ 08期
关键词
:
D O I
:
10.1002/app.1979.070230826
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 mechanical shear degradation of polydisperse polyisobutene and monodisperse polystrene in oils of different viscosities in the concentration range of 0.1% to 1% was studied using a high‐shear concentric cylinder viscometer under laminar and uniform well‐defined shear field conditions. Molecular weight distributions (MWDs) were measured by gel permeation chromatography (GPC). Degradation of polydisperse polyisobutene solutions narrows the distributions principally through the breaking down of large molecules. Degradation of monodisperse polystyrene broadens the distributions at lower shear stress. At higher shear stresses, the distributions do not broaden as much but are still broader than those of the original polymer. The final Mw/Mn ratios are considerably different from the value of 2 expected for random degradation. Hence, the degradation is likely a nonrandom process. It was found that the extent of degradation has a negative concentration dependence coefficient at relatively high molecular weight and a positive concentration dependence at lower molecular weight. Competing mechanisms of “stretching” and “entanglements” for degradation were postulated to explain the results. The degradation data indicate that the shear stress is the controlling parameter, not the shear rate. The shear degradation is independent of initial molecular weight and viscosity of the solvent. Copyright © 1979 John Wiley & Sons, Inc.
引用
收藏
页码:2493 / 2512
页数:20
相关论文
共 60 条
[1]
SHEAR DEGRADATION OF POLYISOBUTENE
ABBAS, KB
论文数:
0
引用数:
0
h-index:
0
机构:
UNIV MASSACHUSETTS,DEPT POLYMER SCI & ENGN,MAT RES LAB,AMHERST,MA 01002
UNIV MASSACHUSETTS,DEPT POLYMER SCI & ENGN,MAT RES LAB,AMHERST,MA 01002
ABBAS, KB
PORTER, RS
论文数:
0
引用数:
0
h-index:
0
机构:
UNIV MASSACHUSETTS,DEPT POLYMER SCI & ENGN,MAT RES LAB,AMHERST,MA 01002
UNIV MASSACHUSETTS,DEPT POLYMER SCI & ENGN,MAT RES LAB,AMHERST,MA 01002
PORTER, RS
[J].
JOURNAL OF APPLIED POLYMER SCIENCE,
1976,
20
(05)
: 1289
-
1300
[2]
SHEAR DEGRADATION OF WATER-SOLUBLE POLYMERS .1. DEGRADATION OF POLYACRYLAMIDE IN A HIGH-SHEAR COUETTE VISCOMETER
ABDELALI.AH
论文数:
0
引用数:
0
h-index:
0
机构:
MCMASTER UNIV,DEPT CHEM ENGN,HAMILTON,ONTARIO,CANADA
MCMASTER UNIV,DEPT CHEM ENGN,HAMILTON,ONTARIO,CANADA
ABDELALI.AH
HAMIELEC, AE
论文数:
0
引用数:
0
h-index:
0
机构:
MCMASTER UNIV,DEPT CHEM ENGN,HAMILTON,ONTARIO,CANADA
MCMASTER UNIV,DEPT CHEM ENGN,HAMILTON,ONTARIO,CANADA
HAMIELEC, AE
[J].
JOURNAL OF APPLIED POLYMER SCIENCE,
1973,
17
(12)
: 3769
-
3778
[3]
FLOW PROPERTIES OF POLYSTYRENE SOLUTIONS UNDER HIGH SHEAR RATES
ABDELALIM, AH
论文数:
0
引用数:
0
h-index:
0
机构:
MCMASTER UNIV, DEPT CHEM ENGN, HAMILTON, ONTARIO, CANADA
MCMASTER UNIV, DEPT CHEM ENGN, HAMILTON, ONTARIO, CANADA
ABDELALIM, AH
BALKE, ST
论文数:
0
引用数:
0
h-index:
0
机构:
MCMASTER UNIV, DEPT CHEM ENGN, HAMILTON, ONTARIO, CANADA
MCMASTER UNIV, DEPT CHEM ENGN, HAMILTON, ONTARIO, CANADA
BALKE, ST
HAMIELEC, AE
论文数:
0
引用数:
0
h-index:
0
机构:
MCMASTER UNIV, DEPT CHEM ENGN, HAMILTON, ONTARIO, CANADA
MCMASTER UNIV, DEPT CHEM ENGN, HAMILTON, ONTARIO, CANADA
HAMIELEC, AE
[J].
JOURNAL OF APPLIED POLYMER SCIENCE,
1973,
17
(05)
: 1431
-
1442
[4]
BARBER E, 1955, ANAL CHEM, V27, P3
[5]
COMPOSITION ANALYSIS OF POLYBUTENES
BARRALL, EM
论文数:
0
引用数:
0
h-index:
0
BARRALL, EM
PORTER, RS
论文数:
0
引用数:
0
h-index:
0
PORTER, RS
JOHNSON, JF
论文数:
0
引用数:
0
h-index:
0
JOHNSON, JF
[J].
JOURNAL OF CHROMATOGRAPHY,
1963,
11
(02):
: 177
-
&
[6]
BARRALL EM, 1964, J APPL POLYM SCI, V8, P1371
[7]
KINETICS OF CAPILLARY SHEAR DEGRADATION IN CONCENTRATED POLYMER SOLUTIONS
BESTUL, AB
论文数:
0
引用数:
0
h-index:
0
BESTUL, AB
[J].
JOURNAL OF CHEMICAL PHYSICS,
1956,
24
(06)
: 1196
-
1201
[8]
ENERGY REQUIREMENTS OF MECHANICAL SHEAR DEGRADATION IN CONCENTRATED POLYMER SOLUTIONS
BESTUL, AB
论文数:
0
引用数:
0
h-index:
0
BESTUL, AB
[J].
JOURNAL OF CHEMICAL PHYSICS,
1960,
32
(02)
: 350
-
356
[9]
COMPOSITION OF APPARENT SHEARING FORCES DURING SHEAR DEGRADATION OF POLYMERS
BESTUL, AB
论文数:
0
引用数:
0
h-index:
0
BESTUL, AB
[J].
JOURNAL OF APPLIED PHYSICS,
1954,
25
(09)
: 1069
-
1074
[10]
EVIDENCE FOR MECHANICAL SHEAR DEGRADATION OF HIGH POLYMERS
BESTUL, AB
论文数:
0
引用数:
0
h-index:
0
BESTUL, AB
[J].
JOURNAL OF PHYSICAL CHEMISTRY,
1957,
61
(04)
: 418
-
421
←
1
2
3
4
5
6
→
共 60 条
[1]
SHEAR DEGRADATION OF POLYISOBUTENE
ABBAS, KB
论文数:
0
引用数:
0
h-index:
0
机构:
UNIV MASSACHUSETTS,DEPT POLYMER SCI & ENGN,MAT RES LAB,AMHERST,MA 01002
UNIV MASSACHUSETTS,DEPT POLYMER SCI & ENGN,MAT RES LAB,AMHERST,MA 01002
ABBAS, KB
PORTER, RS
论文数:
0
引用数:
0
h-index:
0
机构:
UNIV MASSACHUSETTS,DEPT POLYMER SCI & ENGN,MAT RES LAB,AMHERST,MA 01002
UNIV MASSACHUSETTS,DEPT POLYMER SCI & ENGN,MAT RES LAB,AMHERST,MA 01002
PORTER, RS
[J].
JOURNAL OF APPLIED POLYMER SCIENCE,
1976,
20
(05)
: 1289
-
1300
[2]
SHEAR DEGRADATION OF WATER-SOLUBLE POLYMERS .1. DEGRADATION OF POLYACRYLAMIDE IN A HIGH-SHEAR COUETTE VISCOMETER
ABDELALI.AH
论文数:
0
引用数:
0
h-index:
0
机构:
MCMASTER UNIV,DEPT CHEM ENGN,HAMILTON,ONTARIO,CANADA
MCMASTER UNIV,DEPT CHEM ENGN,HAMILTON,ONTARIO,CANADA
ABDELALI.AH
HAMIELEC, AE
论文数:
0
引用数:
0
h-index:
0
机构:
MCMASTER UNIV,DEPT CHEM ENGN,HAMILTON,ONTARIO,CANADA
MCMASTER UNIV,DEPT CHEM ENGN,HAMILTON,ONTARIO,CANADA
HAMIELEC, AE
[J].
JOURNAL OF APPLIED POLYMER SCIENCE,
1973,
17
(12)
: 3769
-
3778
[3]
FLOW PROPERTIES OF POLYSTYRENE SOLUTIONS UNDER HIGH SHEAR RATES
ABDELALIM, AH
论文数:
0
引用数:
0
h-index:
0
机构:
MCMASTER UNIV, DEPT CHEM ENGN, HAMILTON, ONTARIO, CANADA
MCMASTER UNIV, DEPT CHEM ENGN, HAMILTON, ONTARIO, CANADA
ABDELALIM, AH
BALKE, ST
论文数:
0
引用数:
0
h-index:
0
机构:
MCMASTER UNIV, DEPT CHEM ENGN, HAMILTON, ONTARIO, CANADA
MCMASTER UNIV, DEPT CHEM ENGN, HAMILTON, ONTARIO, CANADA
BALKE, ST
HAMIELEC, AE
论文数:
0
引用数:
0
h-index:
0
机构:
MCMASTER UNIV, DEPT CHEM ENGN, HAMILTON, ONTARIO, CANADA
MCMASTER UNIV, DEPT CHEM ENGN, HAMILTON, ONTARIO, CANADA
HAMIELEC, AE
[J].
JOURNAL OF APPLIED POLYMER SCIENCE,
1973,
17
(05)
: 1431
-
1442
[4]
BARBER E, 1955, ANAL CHEM, V27, P3
[5]
COMPOSITION ANALYSIS OF POLYBUTENES
BARRALL, EM
论文数:
0
引用数:
0
h-index:
0
BARRALL, EM
PORTER, RS
论文数:
0
引用数:
0
h-index:
0
PORTER, RS
JOHNSON, JF
论文数:
0
引用数:
0
h-index:
0
JOHNSON, JF
[J].
JOURNAL OF CHROMATOGRAPHY,
1963,
11
(02):
: 177
-
&
[6]
BARRALL EM, 1964, J APPL POLYM SCI, V8, P1371
[7]
KINETICS OF CAPILLARY SHEAR DEGRADATION IN CONCENTRATED POLYMER SOLUTIONS
BESTUL, AB
论文数:
0
引用数:
0
h-index:
0
BESTUL, AB
[J].
JOURNAL OF CHEMICAL PHYSICS,
1956,
24
(06)
: 1196
-
1201
[8]
ENERGY REQUIREMENTS OF MECHANICAL SHEAR DEGRADATION IN CONCENTRATED POLYMER SOLUTIONS
BESTUL, AB
论文数:
0
引用数:
0
h-index:
0
BESTUL, AB
[J].
JOURNAL OF CHEMICAL PHYSICS,
1960,
32
(02)
: 350
-
356
[9]
COMPOSITION OF APPARENT SHEARING FORCES DURING SHEAR DEGRADATION OF POLYMERS
BESTUL, AB
论文数:
0
引用数:
0
h-index:
0
BESTUL, AB
[J].
JOURNAL OF APPLIED PHYSICS,
1954,
25
(09)
: 1069
-
1074
[10]
EVIDENCE FOR MECHANICAL SHEAR DEGRADATION OF HIGH POLYMERS
BESTUL, AB
论文数:
0
引用数:
0
h-index:
0
BESTUL, AB
[J].
JOURNAL OF PHYSICAL CHEMISTRY,
1957,
61
(04)
: 418
-
421
←
1
2
3
4
5
6
→