英语翻译The analysis of the morphology of crystalline polymerble

英语翻译
The analysis of the morphology of crystalline polymer
blends has gained significant momentum over the years.
Much attention has been focused on the variety of microstructures
that result from the crystallization of semicrystalline/
amorphous blends [1e4].One of the important considerations
in this area is the location of the amorphous polymeric diluent
in the microstructure.The diluent molecules can reside in
interspherulitic regions,interfibrillar regions (i.e.between
the lamellar stacks),interlamellar regions,or some combination
of these,yielding different microstructures.The disposition
of the polymeric diluent during crystallization depends
on two factors:the first is the diffusion of the diluent
molecules and the second is the growth rate of the crystal
phase [1,3].If the diffusion is slow and/or the growth rate is
fast,the diluent molecules can be trapped between the lamellar,
resulting in an interlamellar morphology.When the diffusion
is fast and/or the growth rate is slow,the diluent
molecules can diffuse out of the lamellar stacks,resulting in
an interfibrillar or interspherulitic morphology.
Poly(trimethylene terephthalate) (PTT) possesses good
mechanical properties.However,the lower glass transition
temperature (Tg ¼ 44 \2C) of PTT is a disadvantage in some
applications.Poly(ether imide) (PEI) is a high-performance
engineering plastic with a Tg of approximately 215 \2C.However,
due to its amorphous nature PEI is poor for chemical resistance.
Therefore,it is expected that the blending of PTT and
PEI offers a viable means of combining the complementary
properties of both polymers [5].In this paper,the morphology
development and crystallization behavior of a melt-mixed
crystalline/amorphous system consisting of PTT and PEI are
reported.The miscibility was studied with differential scanning
calorimetry (DSC) and a dynamic mechanical thermal
analyzer (DMTA).The spherulitic morphology and the crystallization
behavior were probed using optical microscopy
(OM),small-angle light scattering (SALS) and small-angle
X-ray scattering (SAXS).

分析了结晶聚合物混合物的形态获得明显势头多年来.
太多的注意力都集中在了多种微观结构产生结晶的半结晶非晶混合[1 e4].
一个重要的考虑因素在这个区域位置的非晶态聚合物稀释剂的微观结构.
稀释剂分子可以驻留在interspherulitic区域,纤维间区域(即层状栈之间),层间的区域,或它们的一些组合,产生不同的微观结构.
处理聚合物稀释剂在结晶取决于两个因素:第一个是扩散的稀释剂分子,第二个是增长率的晶体相[1,3].
如果扩散是缓慢的和或增长速度快,稀释剂分子可以被困在薄层