๐๐จ๐๐๐ฒ'๐ฌ ๐๐๐๐๐๐๐๐๐ ๐๐ก๐๐ซ๐ : ๐๐ข๐ ๐ฒ๐จ๐ฎ ๐ง๐จ๐ญ๐ข๐๐ ๐ญ๐ก๐๐ญ ๐ฌ๐๐ฆ๐ข-๐๐ซ๐ฒ๐ฌ๐ญ๐๐ฅ๐ฅ๐ข๐ง๐ ๐ฉ๐จ๐ฅ๐ฒ๐ฆ๐๐ซ๐ฌ ๐๐จ๐ง๐ฌ๐ข๐ฌ๐ญ๐๐ง๐ญ๐ฅ๐ฒ ๐ฌ๐ก๐จ๐ฐ ๐ ๐ก๐ข๐ ๐ก๐๐ซ ๐๐๐ ๐ซ๐๐ ๐จ๐ ๐ฌ๐ก๐ซ๐ข๐ง๐ค๐๐ ๐ ๐๐ง๐ข๐ฌ๐จ๐ญ๐ซ๐จ๐ฉ๐ฒ ๐๐ฎ๐ ๐ญ๐จ ๐ฆ๐จ๐ฅ๐๐๐ฎ๐ฅ๐๐ซ ๐จ๐ซ๐ข๐๐ง๐ญ๐๐ญ๐ข๐จ๐ง ?
๐๐จ๐๐๐ฒ'๐ฌ ๐๐๐๐๐๐๐๐๐ ๐๐ก๐๐ซ๐ ๐๐ข๐ ๐ฒ๐จ๐ฎ ๐ง๐จ๐ญ๐ข๐๐ ๐ญ๐ก๐๐ญ ๐ฌ๐๐ฆ๐ข-๐๐ซ๐ฒ๐ฌ๐ญ๐๐ฅ๐ฅ๐ข๐ง๐ ๐ฉ๐จ๐ฅ๐ฒ๐ฆ๐๐ซ๐ฌ ๐๐จ๐ง๐ฌ๐ข๐ฌ๐ญ๐๐ง๐ญ๐ฅ๐ฒ ๐ฌ๐ก๐จ๐ฐ ๐ ๐ก๐ข๐ ๐ก๐๐ซ ๐๐๐ ๐ซ๐๐ ๐จ๐ ๐ฌ๐ก๐ซ๐ข๐ง๐ค๐๐ ๐ ๐๐ง๐ข๐ฌ๐จ๐ญ๐ซ๐จ๐ฉ๐ฒ ๐๐ฎ๐ ๐ญ๐จ ๐ฆ๐จ๐ฅ๐๐๐ฎ๐ฅ๐๐ซ ๐จ๐ซ๐ข๐๐ง๐ญ๐๐ญ๐ข๐จ๐ง ? One could think that amorphous polymers (often more viscous, so with a longer relaxation time) should produce as much, if not more, orientation effects. But, at least as far as shrinkage anisotropy is concerned, they typically don't. In a semi-crystalline matrix the much faster freezing induced by the phase change and the intricately mixed morphology of the resulting two-phase system (amorphous and crystalline regions), leads to an overall much higher locked-in orientation of the amorphous regions, easily visualized by annealing induced post-shrinkage. Of course the crystalline phase will also have its own anisotropy, for instance in terms of preferred crystalline orientation, possibly obse...