Poly SEBS

Loo et al. [21,42,44,91] reported a simple exponential decay (n = 1) for polyethylene-fc-poly(styrene-ran-ethylene-ran-butene) [PE-fo-poly(SEB)] diblock copolymers in which the PE blocks form isolated spheres or cylin-... 

When ACPC was condensed with hexamethylene diamine in the presence of two other acid chlorides (seb-acoyl or adipoyl chloride), poly(amide)s 6.6 and 6.10 with various numbers of azo groups per repeating unit (between 0.14 and 1.0, depending on the ratio of the acid chlorides used) could be obtained [35,36]. Thus, block copolymers with a controlled segment length of the poly-(amide) blocks were attainable. 

FIGURE 2.15 Forces of interactions on blocks and nanoclay of poly[styrene-(ethylene-co-butylene)-styrene] (SEBS)-clay nanocomposite taken from force-volume experiments. (From Ganguly, A., Sarkar, M.D., and Bhowmick, A.K., J. Polym. Set, Part B Polym. Phys., 45, 52, 2006. Courtesy of Wiley InterScience.)... 

Polycarbonate-polystyrene blend along with poly(alkylene-dicarboxylate) such as SMA SEBS copolymer for toughening blends of PPO with nylon and polyolefin (proprietary compatibilizer)... 

SEBS Poly(styrene-b-ethylene butylene-b-styrene)... 

SEBS Poly(styrene-ethylene-co-butylene-styrene) triblock copolymer... 

Diblock copolymers, especially those containing a block chemically identical to one of the blend components, are more effective than triblocks or graft copolymers. Thermodynamic calculations indicate that efficient compat-ibilisation can be achieved with multiblock copolymers [47], potentially for heterogeneous mixed blends. Miscibility of particular segments of the copolymer in one of the phases of the bend is required. Compatibilisers for blends consisting of mixtures of polyolefins are of major interest for recyclates. Random poly(ethylene-co-propylene) is an effective compatibiliser for LDPE-PP, HDPE-PP or LLDPE-PP blends. The impact performance of PE-PP was improved by the addition of very low density PE or elastomeric poly(styrene-block-(ethylene-co-butylene-l)-block styrene) triblock copolymers (SEBS) [52]. 

Compatibility of PE with PVC is improved by poly(ethylene-graft-vinyl chloride) or partial chlorinated PE. To compatibilise blends of PE with PET, common for the scrap of beverage bottles, EPDM or SEBS are effective additives [56]. 

Sulfonation is very useful chemical modification of polymer, as it induces high polarity in the polymer changing its chemical as well as physical properties. Sulfonated polymers are also important precursors for ionomer formation [75]. There are reports of sulfonation of ethylene-propylene diene terpolymer (EPDM) [76, 77], polyarylene-ether-sulfone [78], polyaromatic ether ketone [79], polyether ether ketone (PEEK) [80], styrene-ethylene-butylene-styrene block copolymer, (SEBS) [81]. Poly [bis(3-methyl phenoxy) phosphozene] [82], Sulfonated polymers show a distinct peak at 1176 cm"1 due to stretching vibration of 0=S=0 in the -S03H group. Another peak appears at 881 cm 1 due to stretching vibration of S-OH bond. However, the position of different vibrational bands due to sulfonation depends on the nature of the cations as well as types of solvents [75, 76]. 

Blends of syndiotactic styrene-/ -methylstyrene copolymers (SPMS) with poly(styrene)-block-poly(ethylene-co-butylene)-block-polystyrene (SEBS) has been reported. [21] No significant effects on the tensile modulus and strength were observed for blends containing less than 10% SEBS. SEM of drawn samples of the blends showed that the dispersed SEBS phase had been extended to about the same extent as the bulk blend, indicating good adhesion between the two phases. 

Poly(styrene-6-ethylene-co-butylene-/)-styrene) (SEBS) block copolymers... 

PVC with ABS and SBS SBS with PS, EVAc and other ingredients HIPS with 12.5 wt% PB SBS SIS with PS and/or IR PS and/or HIPS with PP and SEBS Poly-/)-methylstyrene (F MS) with SBS AN-grafted SEBS with SAN PS with (SB),andSBR SEBS dissolved in styrene, methacrylic acid, and isoprene, then polymerized SEBS-type IPN with carbon black, CB PS with AXBXA or (AXB), (A = styrene,... 

SEBS must be processed below 280°C, thus its use with specialty resins has been limited to poly-phenylenesulfide (PPS) [Garcia and Martinovich, 1984]. Sometimes SBS and a specialty resin are parts of a multicomponent blend, viz. PPS, PPE, either PA-6 or PA-12, SEBS (Kraton G), an acidified polyolefin (e.g., EPR-MA, PE-GMA, or EVAc-GMA), and reactive compatibilizer (citric, maleic, or agaric acid). Here, PPS was a matrix, PA was the dispersed phase that contained PPE/ SEBS and a filler [Ishida and Kabaya, 1994]. 

PE with EVAc, CPE, BR, etc., have been chemically foamed at T = 150-210°C 5 to 95 wt% of LDPE or LLDPE with EAA PE with either poly(ethylene-co-vinylcarboxylate) or an acrylate PP with an ionomer and EBA-GMA PP with an ionomer, EBA-GMA and EPDM PO with a core-shell graft copolymer MBS-type PP with acidified-PP, or a carboxylic acid-modified EPR, SMM-MA, and either EMMA-GMA or EVAc-GMA LLDPE, PMMA and SEBS, EPR, or ethylene-styrene block copolymer (ES)... 

PP, EPR, PA, and 2 compatibilizers from between SEBS, SEBS-MA, or poly(ethylene-co-acrylic ester-co-MA) recyclable high impact strength blends Chundury, 1994... 

PA-6 (100-0) + poly(m-xylene adipamide) (0-100) / SEES (0-20) / SEBS-g-MA (1.8% MA) (0-20) SSE at 260°C / torque rheometry / mechanical properties / ductile-brittle transition temp. / TEM / DMTA / DSC / effects of mixing protocol / effects of PA-PA transamidation on properties Takeia et al., 1992a... 

Table 2.5 Interfacial Tensions between Polymer Melt Pairs Including Compatibilizing Agents. MAH-PP Maleic Anhydride Grafted Polypropylene SEES Hydrogenated Triblock Copolymer of Styrene and Butadiene MAH-g-SEBS Maleic Anhydride Grafted SEES PEMA-Zn Poly(ethylene-co-methacrylic Acid) lonomer Neutralized by Zinc.

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