RAOIATION EFFECT ON CRYSTALLINE POLYMERS--NUCLEATION EFFECT OF POLYFUNCTIONAL MONOMERS ON CRYSTALLIZATION AND RADIATION CROSSLINKING OF LDPE

Chinese Journal of Applied Chemistry ›› 1989, Vol. 0 ›› Issue (2): 36-39.

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RAOIATION EFFECT ON CRYSTALLINE POLYMERS--NUCLEATION EFFECT OF POLYFUNCTIONAL MONOMERS ON CRYSTALLIZATION AND RADIATION CROSSLINKING OF LDPE

Zhang Lihua, Jiang Simin, Qi Yuchen, Zhang Zicheng

Changchun Institute of Applied Chemistry, Academia Sinica

Received:1988-03-07 Revised:1988-08-04 Published:1989-04-10 Online:1989-04-10

Abstract

Abstract: The nucleation effect of some polyfunctional monomers on radiation crosslinking of low density polyethylene (LDPE) has been studied. The effect of monomer structure onthe moiphological structure of LDPE and the relationship between radiation crosslinkingand crystalline density of LDPE with different monomer were discussed according to theresults of WAXD, TEM, DSC and gel fraction measurements. It is found that in thepresence of monomer the crystalline content of LDPE was larger and the crystalline sizewas smaller than that of LDPE alone, and the greater the nucleation effect, the more acce-lerated the radiation crosslinking effect for LDPE. It is considered that both crystallinedensity and size are the primary (basis) factors in radiation crosslinking of crystallinepolymers, and the crystalline damage caused by irradiation is closely relevent to the Surfacearea between crystalline and amorphous regions of the polymer.

Key words: LDPE, Radiation crosslinking, Nucleation effect, Polyfunctional monomer

Zhang Lihua, Jiang Simin, Qi Yuchen, Zhang Zicheng. RAOIATION EFFECT ON CRYSTALLINE POLYMERS--NUCLEATION EFFECT OF POLYFUNCTIONAL MONOMERS ON CRYSTALLIZATION AND RADIATION CROSSLINKING OF LDPE[J]. Chinese Journal of Applied Chemistry, 1989, 0(2): 36-39.

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RAOIATION EFFECT ON CRYSTALLINE POLYMERS--NUCLEATION EFFECT OF POLYFUNCTIONAL MONOMERS ON CRYSTALLIZATION AND RADIATION CROSSLINKING OF LDPE

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