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Citation: HU Ji-Wen, SHEN Jia-Rui, HUANG Yong. Piled Lamellae Rows in Hard Elastic Polypropylene[J]. Chinese Journal of Applied Chemistry, ;2003, 20(5): 466-469. shu

Piled Lamellae Rows in Hard Elastic Polypropylene

HU Ji-Wen ^a,b,, ,
SHEN Jia-Rui ^b ,
HUANG Yong ^a

1.
a Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650;
2.
b South China University of Technology, Guangzhou

Corresponding author: HU Ji-Wen,
Received Date: 19 June 2002
Available Online: 18 February 2003
Fund Project: 广东省重点攻关(2002A1100103) (2002A1100103)广东省自然科学基金(021471)资助项目 (021471)

The formation and the structure of the unique piled lamellae rows in hard elastic polypropylene have been studied by WAXD and SAXS techniques.The results show that lamellae rows are parallel to each other and perpendicular to the extrusion direction when polypropylene melt crystallized under stress field.And the higher the melting temperature of polypropylene sample,the higher melt draft-ratio is required for piling up.The results also show that lam ellar thickness in polypropylene is increased under higher melt draft ratio,and decreased with increase of melt temperature.The lamellar thickness is increased drastically when annealing temperature is between 110℃ to 120℃.
- hard-elasticity,
- polypropylene,
- piled-lamellae,
- crystalline structure
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