Less than 10% of plastics are recycled worldwide, among which polyolefins, form two-thirds all produced polymers, the most discarded ones. This stems from nonpolar nature limits their degradation and recycling. As such, any approach that may promote recycling polyolefins can significantly shift statistics polymer toward a more sustainable future. To account for that, vitrimer concept proposes unique solution not only increases polarity as such promotes degradation, but also expands utility...

A Ti-based diamine bis(phenolate) catalyst, [Ti{2,2′-(OC₆H₂-4,6-<italic>t</italic>Bu₂)₂NHMePhMeNH}Cl₂], was synthesized and fully characterized by elemental analysis NMR spectroscopy.

A series of new titanium (IV) complexes bearing tetradentate diamine‐diphenolates, homologous to [ONNO] salan type ligands: [Ti{2,2′‐(OC 6 H 2 –4,6‐ t Bu ) NHC 3 NH}(Cl) ] ( Cat1 ), 4 8 Cat2 and Cat3 were synthesized fully characterized by elemental analysis NMR spectroscopy. All three catalysts, after activation with ([Ph C][B(C F 5 ]) as a cocatalyst, exhibited high activities in 1‐decene oligomerization experiments. Gel permeation chromatography (GPC) showed that molecular weight the...

A novel process to produce fully homogenous polyethylene (PE)/silica nanocomposites has been organized based on silica‐grafted poly(1‐hexene) (PHex‐g‐SiO 2 ) nanoparticles. To this end, end‐unsaturated PHex was synthesized by employing Cp ZrCl /MAO catalytic system. Unsaturated structure of the polymer identified 1 H‐NMR in CDCl 3 as solvent. Then, oxidation chain‐end‐unsaturated bonds carried out with meta‐chloroperoxybenzoic acid yield hydroxyl functionalized poly1‐hexene (PHex‐OH) which...

ABSTRACT Poly1‐hexene was prepared using a conventional heterogeneous Ziegler–Natta catalyst and its stereoregularity characterized 13 C‐NMR analysis. New kind of high impact polystyrene (HIPS) by radical polymerization styrene in the presence different amounts synthesized poly1‐hexene (PH) as modifier (HIPS/PH) compared with polybutadiene (HIPS/PB) rubber phase. Scanning electron microscopy (SEM) revealed that dispersion matrix more uniform it HIPS/PB. The strength HIPS/PH 29–79% 80–289%...

Abstract The main aim of this research is to decrease the amount AlCl 3 content that very corrosive and hazardous in catalytic system, required for α‐olefin oligomerization without substantial change final oil features. This was successfully achieved by supporting on different carriers. More precisely, a series supported bimetallic catalysts synthesized immobilization TiCl 4 onto Al 2 O , SiO mixed supports, is, /FeCl . It found silica alumina‐based had higher activities compared support...

Abstract The behaviors of three different catalyst systems, TiCl 4 /MgCl 2 , Cp ZrCl and HfCl were investigated in ethylene/1,5‐hexadiene copolymerization. In the Fourier transform infrared spectra copolymers, cyclization branching detected for 1,5‐hexadiene insertion metallocene Ziegler–Natta respectively. DSC viscometry analyses results revealed that copolymers with lower T m crystallinity higher molecular weight obtained catalysts. sequence length distribution was by using successive...

Abstract In this study, the microstructural, flow, and mechanical properties of two commercially available high‐density polyethylene (HDPE) samples with different particle sizes were quantified. Specifically, blow molding film grade HDPEs produced by same catalyst under conditions acquired in powder form after dryer section an industrial plant. They fractioned according to their into six samples: ≤125, 125–200, 200–315, 315–400, 400–500, ≥ 500 μm. According sieve analysis, (D 50 = 304 μm)...

An innovative procedure for functionalization of polyolefins was developed. It found that synthesized end‐capped with trimethoxysilane (silylated polyolefins) are new polyolefin‐based adhesives. To prepare the mentioned materials,1‐octene as a higher α‐olefin cooligomerized two linear, nonconjugated dienes (ie, 1,5‐hexadiene and 1,7‐octadiene) by using metallocene catalyst system, Cp 2 HfCl /MAO, at room temperature. Then, amine‐terminated (3‐aminopropyltrimethoxysilane) reacted unsaturated...

Abstract The cooligomerization of 1‐decene with 9‐decene‐1‐ol was conducted by using a Ti amine bis‐phenolate catalyst. Light‐curable adhesive prepared the reaction methacryloyl chloride hydroxyl groups synthesized cooligomer, which led to introduction photo‐polymerizable CC double bonds into cooligomer chains. Comonomer insertion oligomeic chains and also were confirmed both FT‐IR NMR spectroscopy. Three‐point bending analysis results cured sample (cured blue light) showed flexural modulus...

ABSTRACT Here we are aimed to unravel the effects of CC functionality and molecular weight rubber on final properties poly1‐hexene‐based high impact polystyrenes (HIPS). In this regard, various HIPS samples were synthesized by free radical polymerization styrene in presence different fractions modifiers including: (i) poly1‐hexene (PHex), (ii) low (Olig), (iii) 1‐hexene/1,5‐hexadiene copolymer (Copolym). Results showed that increasing from PHex Oligm Copoly, degree grafting increases which...

Abstract This study aims to investigate the effects of methacrylate‐functionalized polyhedral oligomeric silsesquioxane (MA‐POSS) on polyolefin‐based adhesives. The so called adhesive was synthesized by cooligomerization 1‐decene/9‐decene‐1‐ol monomers using a Ti amine bis‐phenolate catalyst, [Ti{2,2′‐(OC 6 H 2 ‐4,6‐ t Bu ) NHC 4 NH(O i Pr) ], which subsequentlyacrylated via simple reaction with methacryloyl chloride. Different weight fractions MA‐POSS nanoparticles were solution blended and...