Sequence of enthalpy relaxation, homogeneous crystal nucleation and crystal growth in glassy polyamide 6

被引：0
|
作者：
20140817361037
机构：
[1] Androsch, René
[2] Schick, Christoph
[3] Schmelzer, Jürn W.P.
来源：
Androsch, R. (rene.androsch@iw.uni-halle.de) | 1600年 / Elsevier Ltd卷 / 53期
关键词：
The sequence of densification/enthalpy relaxation; crystal nucleation and crystal growth in glassy polyamide 6 has been quantified using fast scanning chip calorimetry. The melt was vitrified by fast cooling; and then the glass was annealed as a function of temperature and time; covering a time scale of six orders of magnitude; required to separate the individual relaxation/ordering processes. During annealing of the glass; there is first observed enthalpy relaxation; and only after its completion there is detected crystal nucleation followed by crystal growth. A homogeneous nucleation mechanism is suggested. In such case; the characteristic relaxation time of the glass to attain metastability; that is; of its densification; has been shown theoretically (Gutzow and Schmelzer; 2013) to be as a rule much shorter than the characteristic time of nucleus formation. © 2014 Elsevier Ltd. All rights reserved;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Journal article (JA)
引用
收藏
相关论文
共 50 条
  • [41] Nanosecond homogeneous nucleation and crystal growth in shock-compressed SiO2
    Shen Y.
    Jester S.B.
    Qi T.
    Reed E.J.
    Nature Materials, 2016, 15 (1) : 60 - 65
  • [42] Nanosecond homogeneous nucleation and crystal growth in shock-compressed SiO2
    Shen, Yuan
    Jester, Shai B.
    Qi, Tingting
    Reed, Evan J.
    NATURE MATERIALS, 2016, 15 (01) : 60 - +
  • [43] Homogeneous nucleation in superheated crystal molecular dynamics simulation
    Norman, G.E.
    Stegajlov, V.V.
    Doklady Akademii Nauk, 2002, 386 (03) : 328 - 333
  • [44] CIRRUS CRYSTAL NUCLEATION BY HOMOGENEOUS FREEZING OF SOLUTION DROPLETS
    HEYMSFIELD, AJ
    SABIN, RM
    JOURNAL OF THE ATMOSPHERIC SCIENCES, 1989, 46 (14) : 2252 - 2264
  • [45] Molecular Dynamics Simulation of Homogeneous Crystal Nucleation in Polyethylene
    Yi, Peng
    Locker, C. Rebecca
    Rutledge, Gregory C.
    MACROMOLECULES, 2013, 46 (11) : 4723 - 4733
  • [46] Molecular simulation of the homogeneous crystal nucleation of carbon dioxide
    Leyssale, JM
    Delhommelle, J
    Millot, C
    JOURNAL OF CHEMICAL PHYSICS, 2005, 122 (18):
  • [47] Homogeneous primary crystal nucleation: The case for the fringed micelle
    Crist, Buckley
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2007, 234
  • [48] Heterogeneous versus homogeneous crystal nucleation of hard spheres
    Espinosa, Jorge R.
    Vega, Carlos
    Valeriani, Chantal
    Frenkel, Daan
    Sanz, Eduardo
    SOFT MATTER, 2019, 15 (47) : 9625 - 9631
  • [49] How to quantify and avoid finite size effects in computational studies of crystal nucleation: The case of homogeneous crystal nucleation
    Hussain, Sarwar
    Haji-Akbari, Amir
    JOURNAL OF CHEMICAL PHYSICS, 2022, 156 (05):
  • [50] Crystal Nucleation in Glassy Poly(L-lactic acid)
    Androsch, Rene
    Di Lorenzo, Maria Laura
    MACROMOLECULES, 2013, 46 (15) : 6048 - 6056
12345