Biobased Polyurethane Composite Foams Reinforced with Plum Stones and Silanized Plum Stones.

Karolina Miedzińska,Sylwia Członka,Anna Strąkowska,Krzysztof Strzelec

doi:10.3390/ijms22094757

Karolina Miedzińska, Sylwia Członka + Show 2 more

Open Access

https://doi.org/10.3390/ijms22094757

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Abstract

In the following study, ground plum stones and silanized ground plum stones were used as natural fillers for novel polyurethane (PUR) composite foams. The impact of 1, 2, and 5 wt.% of fillers on the cellular structure, foaming parameters, and mechanical, thermomechanical, and thermal properties of produced foams were assessed. The results showed that the silanization process leads to acquiring fillers with a smoother surface compared to unmodified filler. The results also showed that the morphology of the obtained materials is affected by the type and content of filler. Moreover, the modified PUR foams showed improved properties. For example, compared with the reference foam (PUR_REF), the foam with the addition of 1 wt.% of unmodified plum filler showed better mechanical properties, such as higher compressive strength (~8% improvement) and better flexural strength (~6% improvement). The addition of silanized plum filler improved the thermal stability and hydrophobic character of PUR foams. This work shows the relationship between the mechanical, thermal, and application properties of the obtained PUR composites depending on the modification of the filler used during synthesis.

Highlights

Polymer composites have taken over the world market
Scientists have begun to look for new methods of obtaining more natural additives for polymer composites consistent with the principles of Sustainable
The wide range of possibilities for manipulating the chemical components that make up the polymer backbone offers a huge variety of finished product characteristics and the ability to tailor their properties to specific applications [3,4]

Summary

Introduction

Polymer composites have taken over the world market. The growing demand for polymer materials has increased the environmental requirements for these products. Scientists have begun to look for new methods of obtaining more natural additives for polymer composites consistent with the principles of Sustainable. One of the groups of polymers with the most versatile properties is polyurethanes (PUR). The wide range of possibilities for manipulating the chemical components that make up the polymer backbone offers a huge variety of finished product characteristics and the ability to tailor their properties to specific applications [3,4]. Depending on the components and modifiers used in the synthesis, PUR materials with new and improved mechanical, chemical, physical, and functional properties can be obtained [5]

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