Properties of recycled polycaprolactone‐based thermoplastic polyurethane filled with montmorillonites

Abstract

The properties of recycled low temperature biodegradable polycaprolactone-based thermoplastic polyurethane (rTPU), filled with different types of organically modified montmorillonite (MMT) prepared by two-roll milling, were studied. The dependence of rTPU properties on the mastication time and clays content was determined by various structural and physical testing methods. Results show that the melt flow and mechanical properties of rTPU deteriorate with increasing of mastication time, but thermal properties were affected only slightly. rTPU/MMT composites show exfoliated or intercalated structures depending on the nature of organic modifier of clay. MMT reduces slightly rTPU tensile and melt flow properties, but accelerates hydrolytic degradation process. During degradation the weight loss and polydispersity increase significantly in the presence of MMT, but it does not accelerate crystallinity changes. The degradation of rTPU composites with higher hydrophilicity organoclays proceeds faster than that with hydrophobic ones due to the relatively higher interaction with polymer matrix.

π‐Plasmon absorbance films of carboxylic functionalized CNTs coupled with renewable PGP platforms

“…The annual production of pectin exceeded 60 000 tons in 2015 with average price of $15/kg, which makes it a cheap renewable natural resource. On the other hand, polycaprolactone is recycled, biodegradable, abundant, and used in many versatile applications . The annual production of polycaprolactone was approximately 58 000 metric tons over 2015 and expected to reach 105 000 metric tons by the year 2021, which makes it a renewable and recycled material.…”

“…On the other hand, polycaprolactone is recycled, biodegradable, abundant, and used in many versatile applications. 44,45 The annual production of polycaprolactone was approximately 58 000 metric tons over 2015 and expected to reach 105 000 metric tons by the year 2021, 46 which makes it a renewable and recycled material. Thus, the combination of pectin and polycaprolactone to form PGP could provide an ideal platform for future of many electronic devices like printed circuit boards, computer chips, and integrated circuits especially if combined with carboxylic functionalized CNTs that have advanced characteristics.…”

Properties of Recycled Thermoplastic Polyurethane Filled with Plasma Treated Bentonite

“…These materials were generated from orthopedic device manufacturing process at the cutting stage. Glass transition temperature T g of Beachcast and Turbotreat are 60–65 and 70–75 °C, respectively . The untreated bentonite clay Nanofill N116 (N116) from Souther Clay Products (Gonzales, TX) basal spacing of 1.23 nm was used for investigation.…”

“…The possibility of recycling by two‐roll mill mixing technique and secondary use of TPU‐PCL was investigated . It has been found that recycled TPU‐PCL blends have worse mechanical and shape memory properties compared with the pristine materials.…”

Mechanical, Thermomechanical and Reprocessing Behavior of Green Composites from Biodegradable Polymer and Wood Flour

“…Although in the last decades plastic recycling experienced a large growth in capacity and technology, the fraction of plastics waste annually disposed in landfills is still the most significant [ 1 ]. Furthermore, most of the common polymeric materials are highly resistant to physical and microbial degradation and become environmental polluters [ 2 ]. The packaging industry involves huge quantities of plastics and since it deals often with biodegradable products, such as food, this would suggest the use of biodegradable polymers [ 3 ].…”