The effect of hyperbranched polymer lubricant as a compatibilizer on the structure and properties of lignin/polypropylene composites

Abstract

In this work, the lignin/polypropylene (PP) composites were prepared by lignin and PP using hyperbranched polymer lubricant (HBPL) as a compatibilizer, which was synthesized by oleic acid and amino-terminated hyperbranch (HBP-NH 2 ) polymer in toluene solvent. The impact and flexural strength of the resulting composites were investigated. Experimental results indicated that the impact strength and flexural strength of lignin/PP composites modified with HBPL are 52.3% and 63.6% higher than that of untreated systems, respectively. HBPL treatment could also significantly improve the melt flow rate (MFR) of the lignin/PP composites. Meanwhile, the storage modulus (E?) of adding the HBPL was slightly higher than that of the uncompatibilized system. In addition, scanning electron microscope images showed that the dispersion of the lignin added with HBPL in the polymer matrix was improved. It can be inferred that the lignin and PP matrix interfacial bonding was strengthened.

Electrospun hyperbranched polylactic acid–modified cellulose nanocrystals/polylactic acid for shape memory membranes with high mechanical properties

“…A main defect of CNCs is its intrinsic wetting ability, which comes out from poor mixing and dissolving with polymeric matrix. In view of this problem, our group has used more than hyperdispersants (such as flexible chain macromolecules, hyperbranched structure, etc) to modify CNCs, which have greatly improved the mechanical properties when applied to epoxy resin and polypropylene wood‐plastic composite materials …”

“…In view of this problem, our group has used more than hyperdispersants (such as flexible chain macromolecules, hyperbranched structure, etc) to modify CNCs, which have greatly improved the mechanical properties when applied to epoxy resin and polypropylene wood-plastic composite materials. [32][33][34] In this work, the PLA nanofiber membranes reinforced with hyperbranched PLA-modified cellulose nanocrystals (H-PLA-CNCs) were prepared by electrostatic spinning. The morphology, thermodynamic, mechanical performances, and the shape memory performances of the composite nanofiber membranes were researched.…”

A novel functional silica/lignin hybrid material as a potential bio-based polypropylene filler

“…Literature reports also indicate the possibility of using lignocellulosic materials, including pure lignin, as fillers in a wide range of polymer matrices, both strongly polar (polyethylene terephthalate (PET) and polyethylene oxide (PEO) ) and hydrophobic (polypropylene (PP) ). Studies have also been carried out with poly(vinyl chloride) .…”

Use of Filled Bioplastics in Construction

“…Hydrolysis industry comprises a number of industries. Their technology is based on the hydrolytic destruction of plant materials [8][9][10][11][12][13][14]. This process is carried out by the catalytic conversion of natural wood polysaccharides (cellulose and hemicellulose) into monosaccharides, which are then used to produce a number of high-value products [15][16][17][18][19].…”