Influences of hyperbranched polyethylenimine on the reactive compatibilization of polycarbonate/polyamide blends

Wang, Mingji; Yuan, Guangcui; Han, Charles C.

doi:10.1007/s10118-014-1475-0

Cited by 8 publications

(4 citation statements)

References 36 publications

(42 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Inspired by previous studies regarding ethylenediamine aminolysis of PET and in efforts to expand the scope of reactive compatibilization for PET/HDPE blends, we envisioned that amino-telechelic polyethylene (ATPE) could react with the ester linkages of PET, affording a PET–PE multiblock poly(ester amide) that would ultimately serve as a blend compatibilizer (Scheme ). − Compatibilization via aminolysis is advantageous in that the reaction proceeds without catalysis and has been previously demonstrated in PET/polyamide and polycarbonate/polyamide blends. − Furthermore, ATPE can cocrystallize with the HDPE phase, potentially leading to enhanced compatibilization compared to amorphous compatibilizers such as PEGMA and PEGMMA.…”

Section: Introductionmentioning

confidence: 92%

Reactive Compatibilization of Poly(ethylene terephthalate) and High-Density Polyethylene Using Amino-Telechelic Polyethylene

et al. 2016

View full text Add to dashboard Cite

Low molar mass (3−17 kg/mol) amino-telechelic polyethylene (ATPE) was used to reactively compatibilize poly(ethylene terephthalate) (PET) and high-density polyethylene (HDPE) via ester aminolysis of PET. A tertbutyloxycarbonyl (Boc)-protected polyethylene precursor was thermolytically deprotected during the melt-blending process to render the reactive amine termini. Spectroscopic analysis of a model reaction confirmed the presence of amide functionality in the resultant material. Through blending studies, we found that low loadings of ATPE (0.5 wt %) significantly reduced the volume of the dispersed HDPE phase particles by a factor of 8 when compared to a binary PET/HDPE blend as assessed by scanning electron microscopy (SEM). Mechanical analysis of the ATPE-compatibilized blends showed a 12fold increase in the elongation at break over the unmodified PET/HDPE blend. Ultimately, the results here offer a new approach to reactively compatibilize and toughen PET/HDPE blends and open the door for other uses of amino-telechelic polyethylene.

show abstract

Section: Introductionmentioning

confidence: 92%

Reactive Compatibilization of Poly(ethylene terephthalate) and High-Density Polyethylene Using Amino-Telechelic Polyethylene

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Interestingly, very less attention was placed upon self-healing on rubber using polyethylenimine (PEI), which is neither extrinsic nor intrinsic type healing mechanism. 3 Wang et al 4 investigated the influence of hyperbranched PEI (hPEI) with M w of 10,000 g/ mol on the blending properties of bisphenol-A polycarbonate (PC) and amorphous polyamide (aPA) which were substantially immiscible. They found that the compatibility of the PC/aPA blend could be significantly improved by incorporating hPEI.…”

Section: Introductionmentioning

confidence: 99%

Effect of polyethylenimine on properties of emulsion styrene butadiene rubber/butadiene rubber blends

Siaw

Baharulrazi

Man

et al. 2022

Journal of Elastomers & Plastics

View full text Add to dashboard Cite

The purpose of this study was to evaluate the effect of polyethylenimine (PEI) on the properties of emulsion styrene butadiene rubber (ESBR)/butadiene rubber (BR) blends. PEI with molecular weight (Mw) of 800, 2,000, 25,000, and 270,000 g/mol with various ratios was successfully incorporated into ESBR/BR blends via rubber compounding method. Study showed almost 100% decrease in scorch time, ts2 in lower Mw PEI (800 and 2000 g/mol), compared to higher Mw PEI (25,000 and 270,000 g/mol) in ESBR/BR blends. PEI incorporated ESBR/BR blends showed an overall improvement in terms of tensile strength. Lower Mw PEI induced better tensile strength with an optimum value at 1.22 MPa, while higher Mw PEI induced better tear strength and self-healing ability. Incorporation of 5 phr PEI 270,000 g/mol in the blend successfully achieved the optimum self-healing efficiency of 71.5% at 160°C for 1 h. Phase separation occurred between higher Mw viscous PEI with rubber matrix at crack region to promote thermal self-healing. PEI molecules were found to be accumulated and assembled on the interface of the rubber chain from scanning electron microscopy (SEM) images. It was suggested weak physical bond interaction such as Van der Waals holding both rubber chains and PEI together, without any changes in the rubber chain backbone.

show abstract

“…A great quantity of research has indicated that the reactive-comb-like compatibilizers usually exhibit better compatibilizing effects due to the double-comb structures. The double-grafted side chains of the compatibilizers can stabilize the dynamic balance of the neighboring phases at the interface [13][14][15][16]. This technique is based on the in-situ formation of double-grafted copolymers at polymer-polymer interface, which substantially lowers interface tension, suppresses particle coalescence, and ultimately exhibits enhanced physical properties [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Reactive Comb Polymer Compatibilized Immiscible PVDF/PLLA Blends: Effects of the Main Chain Structure of Compatibilizer

Yang

Song²,

Wang

et al. 2020

Polymers

View full text Add to dashboard Cite

The compatibilizer with double comb structure has a superior compatibilizing effect for immiscible polymer blends due to the symmetrical structure on both sides of main chains. Extensive study related to the architectural effects of compatibilizer on the compatibilization has mainly focused on the side chains. We investigated the influence of the compatibilizer-main-chain structure on the compatibilizing effect for immiscible poly(vinylidene fluoride)/poly(L-lactic acid) (PVDF/PLLA) blends. Two reactive-comb compatibilizers with polystyrene (PS) and polymethylmethacrylate (PMMA) as main chains and PMMA as the side chains have been synthesized. PS is immiscible with both PLLA and PVDF, while PMMA is miscible with PVDF. It was found that both compatibilizers can improve the compatibility between the PLLA and PVDF, with different compatibilization effects. In the PVDF/PLLA (50/50) blends, 1 wt.% poly(styrene-co-glycidyl methacrylate)-graft-poly(methyl methacrylate) (RC–SG) tuned the morphology from the droplet-in-matrix structure to the co-continuous structure, while the blends with poly(methyl methacrylate-co-glycidyl methacrylate)-graft-poly(methyl methacrylate) (RC–MMG) kept the sea-island structure with even 3 wt.% loading. Moreover, RC–SG induces a wider co-continuous interval range than RC–MMG. The co-continuous structure obtained by RC–SG was also more stable than that by RC–MMG. It was further found that RC–SG-compatibilized PVDF/PLLA blends exhibit higher mechanical properties than the RC–MMG-compatibilized blends.

show abstract

Influences of hyperbranched polyethylenimine on the reactive compatibilization of polycarbonate/polyamide blends

Cited by 8 publications

References 36 publications

Reactive Compatibilization of Poly(ethylene terephthalate) and High-Density Polyethylene Using Amino-Telechelic Polyethylene

Reactive Compatibilization of Poly(ethylene terephthalate) and High-Density Polyethylene Using Amino-Telechelic Polyethylene

Effect of polyethylenimine on properties of emulsion styrene butadiene rubber/butadiene rubber blends

Reactive Comb Polymer Compatibilized Immiscible PVDF/PLLA Blends: Effects of the Main Chain Structure of Compatibilizer

Contact Info

Product

Resources

About