Comparing effects of two tri-block copolymers on morphology, thermal, mechanical and rheological properties of polystyrene/low density polyethylene blends

Finely Modulated LDPE/PS Blends via Synergistic Compatibilization with SEBS-g-MAH and OMMT

“…The layer distance of OMMT was 2.38 nm. For the LDPE/PS/SEBS-g-MAH (70/30/7, wt%) composite, there were no peaks in the range of 0.7-10 • , which was similar to those of previous studies [13,34]. The layer distance of OMMT with 0.3% OMMT composites was 11.62 nm, indicating that molecule chains of the composite could intercalate into OMMT, thus confining the mobility of PS and LDPE and reducing the size of the PS phase [30].…”

“…Phase behavior is dependent on two factors: composition and processing temperature [7,12]. Polystyrene (PS) and polyethylene (PE) are two of the most widely used commodity polymers [13]. Many studies were conducted on the preparation and properties of the PS/PE blend [13][14][15][16][17].…”

“…Polystyrene (PS) and polyethylene (PE) are two of the most widely used commodity polymers [13]. Many studies were conducted on the preparation and properties of the PS/PE blend [13][14][15][16][17]. Specifically, microcellular foams of PE/PS blends could be used in the fields of packaging and building due to the excellent sound and heat insulation, chemical resistance, and mechanical properties, as well as low electrical and thermal conductivity [18][19][20][21].…”

A Compatibilizing Strategy for Upcycling Polyethylene and Polystyrene with Ethylene/(Phenyl Functionalized α-Olefin) Copolymers Containing Continuous Comonomer Segments

“…However, PE and PS are typical thermodynamic incompatible systems, and the mechanical properties of melt blends have negative deviations in all composition ranges. 1,13,14 Compatibilizers could open promising opportunities for upcycling recovered PE/PS into higher-value or available materials with lower sorting costs. On the basis of fundamentals of compatibilization, the most desirable compatibilizers for PE/PS blends would be diblock, multiblock, and graft copolymers of ethylene and styrene (or other phenyl functionalized α-olefins).…”

“…Copolymerization of Ethylene/Allylbenzene and Ethylene/4-Phenyl-1-Butene. After examining allylbenzene (AP) and 4-phenyl-1-butene (BP) homopolymerization, we then studied the copolymerization of AP and E. Different from AP homopolymerization catalyzed by complex 1 (almost no activity), as the [AP]/ [1] feed ratios raising from 200/1 to 300/1 and 500/1 under 1 bar of E in toluene, the activity of E/ AP copolymerization was moderate and slightly increased from 1.74 × 10 5 g mol Sc −1 h −1 to 2.28 × 10 5 and 3.24 × 10 5 g mol Sc −1 h −1 , respectively (Table 2, entries 1−3). The M w of E-AP copolymers also raised from 0.4 × 10 4 g mol −1 to 0.6 × 10 4 and 1.0 × 10 4 g mol −1 , and the incorporation ratio of AP monomer in the resultant copolymers gradually increased from 2.0 mol % to 3.7 mol % and 5.8 mol %, respectively.…”