Prevention of surface defects in calendered poly(vinyl chloride) sheets using a succinate‐capped poly(caprolactone) additive
Andrew Rideout,
Kushal Panchal,
Milan Maric
et al.
Abstract:Surface defects known as “gas checks” often mar the surfaces of poly(vinyl chloride) (PVC) calendered films. These defects are typically prevented through changes in the calender operating parameters, a costly exercise which also limits the sheet thickness and the production rate. Adding a low concentration of poly(caprolactone) (PCL)‐based star‐shaped compound can eliminate gas check defects in PVC calendering. The effects of a triheptylsuccinate‐terminated PCL with a PCL triol core and number average molecul… Show more
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