Text of the Proclamation of the State of Guinea-Bissau by the People's National Assembly

Assembly, Guinea Bissau People's National

doi:10.2307/1166704

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Thermodynamics and kinetics of orientational crystallization of flexible-chain polymers

Elyashevich

1982

Polymerizations and Polymer Properties

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Crystallization of flexible-chain polymers from isotropic solutions and melts usually leads to the formation of folded-chain crystals. Mechanical properties, particularly the tenacity of these samples, are limited by the small number of tie chains. Crystallization in deformed melts proceeds by a substantially different mechanism involving extension of chains and formation of extended-chain crystals: this process is to some extent similar to that of crystallization of rigid-chain polymers leading to polymers of high tenacities. This method which promotes the formation of extended-chain crystals during crystallization of flexible-chain polymers -the orientational crystallization -is suitable for the preparation of polymer films and fibers from flexible-chain polymers with high tenacity and high modulus. The paper presents a comparison of orientational crystallization with other methods forobtaining high-strength polymer materials. Technological prospects of this method are also considered.

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Thermodynamics and kinetics of orientational crystallization of flexible-chain polymers

Elyashevich

1982

Polymerizations and Polymer Properties

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V Anhang

2020

Verwobene Geschichte – Verflochtenes Gedächtnis?

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Text of the Proclamation of the State of Guinea-Bissau by the People's National Assembly

Abstract: The current era of man's history is characterized by the struggle of peoples for their full emancipation from colonialism, imperialism, racism and all other forms of domination and oppression hampering human development and dignity, peace and progress.

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Thermodynamics and kinetics of orientational crystallization of flexible-chain polymers

Thermodynamics and kinetics of orientational crystallization of flexible-chain polymers

V Anhang

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