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Nucleation mechanisms in microcellul...
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Kweeder, James A.
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Nucleation mechanisms in microcellular polymer foams.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Nucleation mechanisms in microcellular polymer foams./
作者:
Kweeder, James A.
出版者:
Ann Arbor : ProQuest Dissertations & Theses, : 1997,
面頁冊數:
94 p.
附註:
Source: Dissertations Abstracts International, Volume: 59-02, Section: B.
Contained By:
Dissertations Abstracts International59-02B.
標題:
Chemical engineering. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9723494
ISBN:
9780591322965
Nucleation mechanisms in microcellular polymer foams.
Kweeder, James A.
Nucleation mechanisms in microcellular polymer foams.
- Ann Arbor : ProQuest Dissertations & Theses, 1997 - 94 p.
Source: Dissertations Abstracts International, Volume: 59-02, Section: B.
Thesis (Ph.D.)--Clarkson University, 1997.
This item must not be sold to any third party vendors.
Existing models for microcellular foam nucleation fail to predict observed experimental results. Experimental results were compared to classical nucleation models and revealed irreconcilable differences. Based on the knowledge that microscopic defects exist in polymer systems, a new physical mechanism for foam cell formation is proposed which is consistent with experimental results. Rather than nucleating a new gas phase during foaming, one is instead trying to grow microscopic voids and cracks into the bubbles. From this concept, a thermodynamic model has been proposed for the activation of microvoids into viable foam cells. Study of the resulting model reaffirms the validity of the microvoid mechanism; but, it also demonstrates that foam cell nucleation can no longer be treated separately from the bubble growth phenomena.
ISBN: 9780591322965Subjects--Topical Terms:
560457
Chemical engineering.
Nucleation mechanisms in microcellular polymer foams.
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