Heat-Induced changes in oil and grease resistant hydroxypropylated-starch-based barrier coatings Sami-Seppo

Machine-coated starch-based dispersion coatings prevent mineral oil migration from paperboard

“…Redistribution of the starch coating layer as the fiber structure of the paperboard swells in higher RH or crystallization of the amylose portion of starch molecules [35] may also be possible. This decrease in thickness has also been observed by [41], who found that the coating components have a tendency to move during drying. They confirmed their findings with XPS measurements.…”

Method for Limiting Waste in Wood Plastic Composite Post-Production by Means of Press Unit Control Parameters Utilizing Temperature-Related Dimensional Changes

“…In this study, the effect of moisture was not reviewed, as the initial moisture level of the material was already too low (2.4% RH) to cause any noticeable swelling of the product. In addition, it was found that reheating improved material durability because of the mentioned polymer migration behavior (Segerhom 2007;Ovaska 2015). This heatinduced migration can allow polymers to enclose exposed fibers at the surface of the composite material, making the composite water resistant and resistant to swelling.…”

Developments in Hydroxypropylation of Starch: A Review

“…Properties of films made from HPS, composite films made from HPS, films made by blending HPS and hydroxypropylmethylcellulose (HPMC) and κ‐carrageenan, composite coating formulations, and gels made from HPS/HPMC blends have also been studied.…”