Chlorination of polyethylene single crystals
1980; Wiley; Volume: 181; Issue: 5 Linguagem: Inglês
10.1002/macp.1980.021810509
ISSN0025-116X
AutoresJulio Guzmán, José Gómez Fatou, José M. Pereña,
Tópico(s)Microplastics and Plastic Pollution
ResumoAbstract Chlorination under mild conditions of suspensions of polyethylene single crystals demonstrated that a selective attack on the fold surface takes place. Two polyethylene molecular weight fractions ( M n = 47000 and M n = 150 000) were used and single crystals were grown isothermally from p ‐xylene at 88°C. The chlorine content was changed from 4 wt.‐% to 30 wt.‐% and to this level no evidence for crystal attack and loss of crystallinity was found. The melting temperatures of chlorinated single crystals decrease with increasing chlorination up to about 15 wt.‐% chlorine content and then stay constant for higher chlorine contents. Moreover, the heat of melting of the chlorinated single crystals is constant and is independent of the chlorine content up to 25 wt.‐%. These results are compared with those of samples of chlorinated polyethylene recrystallized from solution and from the melt.
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