Effect of Rubbing-Induced Polymer Chain Alignment on Adhesion and Friction of Glassy Polystyrene Surfaces

Langmuir ◽  
2005 ◽  
Vol 21 (2) ◽  
pp. 682-685 ◽  
Author(s):  
Melvina Leolukman ◽  
Seong H. Kim
Keyword(s):  
Polymer Chain ◽  
Chain Alignment ◽  
Polymer Chain Alignment

The Effect of Polymer Chain Alignment and Relaxation on Force-Induced Chemical Reactions in an Elastomer

2013 ◽  
Vol 24 (11) ◽  
pp. 1529-1537 ◽  
Author(s):  
Brett A. Beiermann ◽  
Sharlotte L. B. Kramer ◽  
Preston A. May ◽  
Jeffrey S. Moore ◽  
Scott R. White ◽  
...  
Keyword(s):  
Polymer Chain ◽  
Chemical Reactions ◽  
Chain Alignment ◽  
Polymer Chain Alignment

Polymer chain alignment and transistor properties of nanochannel-templated poly(3-hexylthiophene) nanowires

2016 ◽  
Vol 120 (5) ◽  
pp. 055501 ◽  
Author(s):  
Seungjun Oh ◽  
Ryoma Hayakawa ◽  
Chengjun Pan ◽  
Kazunori Sugiyasu ◽  
Yutaka Wakayama
Keyword(s):  
Polymer Chain ◽  
Chain Alignment ◽  
Polymer Chain Alignment

Polymer Chain Alignment in Shape Memory Polymer

2006 ◽  
Author(s):  
Richard Beblo ◽  
Lisa Mauck Weiland
Keyword(s):  
Shape Memory ◽  
Polymer Chain ◽  
Shape Memory Polymer ◽  
Shape Memory Polymers ◽  
Structure Design ◽  
Polymer Chains ◽  
Prospective Design ◽  
Design Concepts ◽  
Chain Alignment ◽  
Polymer Chain Alignment

Since their development, shape memory polymers, urethanes, styrenes, and the like, have been of increasing interest in advanced material and structure design. The following is an experimental investigation into the effect polymer chain alignment has on the mechanical properties of a particular styrene shape memory polymer, Veriflex®. Aligning the polymer chains results in several material anisotropies; giving rise to the possibility of controllable, directional shape memory and modulus behavior and a basis for a multitude of prospective design concepts.

scholarly journals Nanoparticle amount, and not size, determines chain alignment and nonlinear hardening in polymer nanocomposites

2017 ◽  
Vol 114 (16) ◽  
pp. E3170-E3177 ◽  
Author(s):  
H. Samet Varol ◽  
Fanlong Meng ◽  
Babak Hosseinkhani ◽  
Christian Malm ◽  
Daniel Bonn ◽  
...  
Keyword(s):  
Strain Hardening ◽  
Polymer Nanocomposites ◽  
Nonlinear Elasticity ◽  
Volume Fraction ◽  
Uniaxial Tensile ◽  
Large Strains ◽  
Chain Alignment ◽  
Strain Hardening Behavior ◽  
Polymer Chain Alignment ◽  
Nonlinear Hardening

Polymer nanocomposites—materials in which a polymer matrix is blended with nanoparticles (or fillers)—strengthen under sufficiently large strains. Such strain hardening is critical to their function, especially for materials that bear large cyclic loads such as car tires or bearing sealants. Although the reinforcement (i.e., the increase in the linear elasticity) by the addition of filler particles is phenomenologically understood, considerably less is known about strain hardening (the nonlinear elasticity). Here, we elucidate the molecular origin of strain hardening using uniaxial tensile loading, microspectroscopy of polymer chain alignment, and theory. The strain-hardening behavior and chain alignment are found to depend on the volume fraction, but not on the size of nanofillers. This contrasts with reinforcement, which depends on both volume fraction and size of nanofillers, potentially allowing linear and nonlinear elasticity of nanocomposites to be tuned independently.

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