Temporarily Crosslinked Polymersの緩和スペクトルと定常粘性 : 箱形スペクトルとM^<3・4>則の導出 : 高分子のレオロジー

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概要

• 論文の詳細を見る

• A molecular theoretical investigation of the viscoelastic properties of amorphous polymeric substances in the range of long relaxation time has been pursued by using a temporarily crosslinked network model, in which cross linkages are created by secondary valence of segments or by entanglement of linear polymer molecules. Consider a single polymer molecule in the system. The deformation of the molecule is different, in general, from that of the system since the polymeric substances do not return to its initial state even though the deformation is removed. Therefore the concept of slipping of molecules or chains is acceptable. In the present consideration, a part of polymer molecule between two adjacent crosslinkages is termed "chain", and the chains, each having the same length, are considered to be Gaussian-chain-springs. The friction of chain is replaced by a bead moving in a medium which is the assembly of polymer molecules excepting the said molecule. Therefore a polymer molecule is equivalent to the so-called Rouse model which corresponds to the macro-Brownian motion of molecule contrary to the micro-Brownian motion ion the ordinary Rouse model. The medium in this model is viscoelastic medium, since polymer molecules are crosslinked to one another. Therefore one chain in a molecule has elastic and viscous effects on other chains through the agency of the medium. The evaluation of the two effects are made by using the above model and on the following medium. The evaluation of the two effects are made by using the above model and on the following two assumptions. One is the assumption determining the viscous effect and is expressed as "The slipping of a chain is influenced by the contractive force of the chain and by the forces given by the nearest chains", and the other is the assumption relating to the elastic effect and is written as " In such a motion of polymer molecule that k chains move in a group, the elastic effect is caused by k chains".

• 社団法人日本材料学会の論文
• 1963-05-15

著者

• 林 静男

  群馬大学学芸学部

関連論文

• 網目構造の力学的および熱力学的性質
• 尺度解析に関する一考察
• 網目構造の非ニュートン粘性 : 高分子液体の流動性
• Temporarily Crosslinked Polymersの緩和スペクトルと定常粘性 : 箱形スペクトルとM^則の導出 : 高分子のレオロジー
• 網目構造の粘弾性 : 高分子レオロジー
• 伸張による繊維弾性の発生
• 高分子粘弾性における箱型スペクトルとM3.4則をめぐって

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