Poly(butylene succinate)/high density polyethylene blend-based nanocomposites with enhanced physical properties – Selectively localized carbon nanotube in pseudo-double percolated structure

Manufacturing and compatibilization of binary blends of polyethylene and poly(bulylene succinate) by injection molding

“…For its part, bioPE/PBS blend presents a tensile modulus of 734.9 MPa, a tensile strength of 15.2 MPa, and elongation at break of 6.7%. Similar values were obtained in the study performed by (Darshan et al, 2019) for PBS/HDPE blends with a value of 676 MPa for young modulus and a value between 5% to 7% for elongation at break. With the addition of PE-g-MA, unexpected results were obtained, it was observed a decrease in their mechanical properties with a reduction of tensile modulus, tensile strength, and elongation at break in 12%, 8%, and 31%, respectively, regarding the values of bioPE/PBS blend, respectively, which indicate that it was not obtained a compatibilizing effect in the bioPE/PBS blend, this variation in the effect compared to other similar studies such as (Darshan et al, 2019) could be related to the proportions of bioPE and PBS used, since in the mentioned study the relation considered was (PBS/HDPE) (70/30) while in this study the proportions were the opposite (bioPE/PBS) (70/30).…”

“…Figure 3c and Figure 3d contain unmodified HNTs and silanized HNTs, respectively, in the first case, it can be seen some HNTs agglomerates (see yellow arrows), this could be related to the lack of interactions between the HNTs (hydrophilic particles) and the blend (hydrophobic), while in the second one silanized HNTs are more dispersed over the blend and it is observed that spherical particles of PBS are more embedded into the matrix (see yellow arrows), which indicates a better interaction between polymers. Later with the addition of unmodified HNTs and silanized HNTs in blends with PE-g-MA Figure 3e and Figure 3f, respectively, it is possible to evidence a decrease in the domain size of PBS, this due to a possible interaction of PE-g-MA with the ester linkage of PBS, which could improve the adhesion between the two phases (Darshan et al, 2019), in which study it was reported a similar trend in the morphology obtained in PBS/HDPE/PE-g-MA blend when adding carbon nanotubes (CNT). In another study carried out by (Rafiee et al, 2016) it was observed that the incorporation of organo-modified layered double hydroxides (LDH) as nanoparticles and maleated polypropylene (PP-g-MA) as compatibilizer into de polypropylene (PP)/ethylene-vinyl acetate copolymer (EVA) blend promote the reduction of EVA domain size.…”

“…PBS has good mechanical properties, similar to polypropylene and polyethylene, and ease of processing, making it a good candidate for use in BioPE blends (Liu, Yu, Cheng, Qu, 2009;Liu, Yu, Cheng, Yang, 2009). However, studies have shown that blending PBS with petrochemical PE results in blends with poor mechanical properties due to the lack of miscibility between both polymers (Darshan, Veluri, Kartik, Yen-Hsiang, & Fang-Chyou, 2019). This lack of miscibility is due to the polarity difference between both polymers.…”

“…Another more recent approach to improve miscibility between polymers is the use of nanoparticles. Several studies have demonstrated how the incorporation of small amounts of nanoparticles such as carbon nanotubes (CNT) (Darshan et al, 2019) (Abdolrasouli, Nazockdast, Sadeghi, & Kaschta, 2015) or sepiolite (Nuñez et al, 2012), unmodified and modified, in PE blends has led to an increase in the miscibility between both polymers. One of the most promising nanoparticles for use as a nanofiller is halloysite nanotubes (HNT).…”

Synthesis of a Novel Phosphorous-Nitrogen Based Charring Agent and Its Application in Flame-retardant HDPE/IFR Composites

“…Polyethylene (PE) is a kind of thermoplastic material with light weight, non-toxic, excellent electrical insulation, chemical corrosion resistance, low cost, and easy processing. Therefore, it has a wide application in the fields of electrical appliances, chemical, food, machinery, and other industries [1,2,3]. Despite its many advantages, its application is limited due to its low limiting oxygen index (LOI), only about 18%, which belongs to flammable materials.…”