Comparative study of gamma-irradiated PP and PE polyolefins part 2: Properties of PP/PE blends obtained by reactive processing with radicals obtained by high shear or gamma-irradiation

Fel, Elie; Khrouz, Lhoussain; Massardier, V.; Cassagnau, Philippe; Bonneviot, Laurent

doi:10.1016/j.polymer.2015.10.070

Cited by 37 publications

(22 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Binary blends with 20 and 30% PCL exhibited a typical behavior of tough material, providing increases around 88.2% for Bio-PE/PCL (80/20 w/w) and 83.2% for Bio-PE/PCL (70/30 w/w) related to Bio-PE. Most of this trend is associated to the increase of PCL content in the mixture, since it presents elastomeric characteristics, being able to act as an impact modifier, promoting an enhancement of the system impact strength (Guimarães et al, 2002;Deblieck et al, 2011;Silva, 2014;Fel et al, 2016;Chudnovsky and Sehanobish, 2017;Agrawal et al, 2018). Table 3 shows a similar behavior for the ternary blends compared to the binary ones.…”

Section: Impact Strength Measurementsmentioning

confidence: 99%

Toughening of bio-PE upon addition of PCL and PEgAA

et al. 2019

View full text Add to dashboard Cite

Researches of polymer blends based on biological and biodegradable polymers appear as a viable alternative to develop environmentally friendly materials. Therefore, the aim of this research was to produce compounds made with biological polyethylene, i.e., Biopolyethylene, Bio-PE, added to the biodegradable Polycaprolactone (PCL) and functionalized by the copolymer of polyethylene grafted with acrylic acid (PEgAA), to obtain better mechanical properties and toughen Bio-PE. Compounds were processed in a co-rotating twin screw extruder and sample tests were injection molded. The compositions investigated were: Bio-PE/PCL at 90/10, 80/20 and 70/30 wt.% without compatibilizer and upon addition of 10 phr (parts per hundred of resin) of PEgAA. The blends were characterized by X-ray diffraction (XRD), impact strength, heat deflection temperature (HDT) and scanning electron microscopy (SEM). Through XRD, it was observed that addition of PCL and PEgAA did not significantly change Bio-PE diffraction patterns. Impact strength data showed that the blends presented a tougher behavior upon addition of PCL and PEgAA. The HDT of compatibilized blend with 20wt.% of PCL was slightly higher. SEM images of compatibilized blends showed lower average particle diameters as well as absence of coalescence and aggregates.

show abstract

Section: Impact Strength Measurementsmentioning

confidence: 99%

Toughening of bio-PE upon addition of PCL and PEgAA

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Another possible reason is the PBAT microgels that are locked by the continuous PCL networks: some highly swelling PBAT microgels could be trapped by the low swelling PCL matrix due to different crosslinking densities in PBAT and PCL, just like the principle of GPC, so the PBAT microgels would be extracted. Because the crosslinking induced by E‐B irradiation was more likely to happen within the microphases if heterogeneous system was irradiated according to Dong and Fel . Works by Nguyen and Alexander considered that energy transferred within about 0.6 nm in PMMA, meaning that E‐B irradiation is a strict adjacent or in situ crosslinking method, and more information should be supplied to confirm the formation of bridge molecular at interfaces in this heterogeneous system and resulted interfacial strength.…”

Section: Resultsmentioning

confidence: 99%

A triple‐shape memory material fabricated by in situ crosslinking of poly(butylene adipate‐co‐terephthalate)/ε‐polycaprolactone via electron‐beam irradiation and its triple‐shape memory effects

Qian

et al. 2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

In this work, we fabricated a triple-shape memory polymeric material though in situ crosslinking of poly(butylene adipate-co-terephthalate)/ε-polycaprolactone blends induced by electron beam irradiation. The intrinsic property of irradiation crosslinking, crosslinking rule in this heterogeneous system, formation of interfacial bridge molecular, and the resulted interfacial strength were investigated. No obvious interfacial slips were observed in tensile test, and the elongation at break was above 900%. The high-temperature relaxation and recovery experiments at nonlinear region confirmed the excellent hyperelasticity and recovery ratios (R r ) can be as high as 95% for samples irradiated above 96 kGy. The mismatch between heating rate and relaxation kinetics resulted in both instable temporary shapes and heating-mode dependent recovery behavior during the recovery process. Self-stability of the temporary shape at middle temperature was also emphasized in view of the phenomenon that the second R r was above 100% in our experiments.

show abstract

“…On the other hand, when they are chemically compatibilized with maleic anhydride (MA), the mean distance of the PP chain with PA 11 chain drops, because of which they formed a stable chain entangled structure, which can distribute the applied tensile load throughout the lattice of the blend. 38,39 This stable structure leads to an increase in the tensile strength for PA11/PP/PP-g-MA (sample [5][6][7][8]. Similarly, if we consider the noncompatibilized form of the ternary blend PA11/PHB/PP/PP-g-MA, it is clear that the tensile strength values are superior to PA11/PP but inferior as compared to PA11/PP/PP-g-MA (sample 9-12).…”

Section: Barrier Propertiesmentioning

confidence: 92%

“…In the compatibilized blend, the PA 11 and PP were chemically bonded with maleic anhydride group, and the addition of PHB allows the proper dispersion of PP chain within the PA 11 matrix. 38,39 This stable structure leads to an increase in the tensile strength for PA11/PP/PP-g-MA (sample [5][6][7][8]. 32,33 Due to which the applied force over the PA11/PHB/PP/-PP-g-MA blend during tensile cycle split uniformly over the sample, which results in less deformation with increased strain.…”

Section: Chemical Resistancementioning

confidence: 99%

Novel approach for the preparation of a compatibilized blend of nylon 11 and polypropylene with polyhydroxybutyrate: Mechanical, thermal, and barrier properties

Gadgeel

Mhaske

2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

This article comprises of the interaction in the immiscible polymer system of nylon 11 (PA 11), polypropylene (PP), and polyhydroxybutyrate (PHB). Reactive compatibilization extrusion method with maleic anhydride-grafted polypropylene (PP-g-MA) is used to achieve compatibility within the polymer. To further improve the interaction of the blend at interphase, PHB was added as a dispersive phase in a concentration varying from 10 to 40% of the total batch. Addition of PHB motives the excellent dispersion of PP chain in PA 11 and assures the compatibility between the phases of PA 11 and PP-g-MA. The entire system of tertiary and binary phases was blended in a twin-screw extruder at different composition. The macro-optimal tensile strength, Young's modulus, bending strength, and notched impact strength of PA11/PP systems were found to be superior as compared to their noncompatibilized systems. The degradation temperature of the blends of PA11/PP and PA11/PHB/PP with and without compatibilizer was evaluated by thermogravimetric analysis (TGA). It was found that the high temperature of degradation was required for compatibilized ternary blend than that of the compatibilized binary blend. The distortion temperature of the systems was studied with the help of heat deflection temperature (HDT) and found to be advanced for blend having a higher concentration of the dispersed phase. Differential scanning calorimetry (DSC) was used to determine the % crystallinity, melting, and crystallization temperature of this system. Chemical resistance and barrier properties of the different compatibilized and noncompatibilized blends were studied. PHB dispersed phase with a reactive compatibilizer cause enhancement in chemical resistance and barrier properties of the blend.

show abstract

Comparative study of gamma-irradiated PP and PE polyolefins part 2: Properties of PP/PE blends obtained by reactive processing with radicals obtained by high shear or gamma-irradiation

Cited by 37 publications

References 65 publications

Toughening of bio-PE upon addition of PCL and PEgAA

Toughening of bio-PE upon addition of PCL and PEgAA

A triple‐shape memory material fabricated by in situ crosslinking of poly(butylene adipate‐co‐terephthalate)/ε‐polycaprolactone via electron‐beam irradiation and its triple‐shape memory effects

Novel approach for the preparation of a compatibilized blend of nylon 11 and polypropylene with polyhydroxybutyrate: Mechanical, thermal, and barrier properties

Contact Info

Product

Resources

About