Graft copolymers of poly(methyl methacrylate) and polyamide-6 via in situ anionic polymerization of ε-caprolactam and their properties

Ying

J of Applied Polymer Sci

2018

In this article, a novel method has been successfully developed to prepare the anionic polyamide 6/polystyrene (APA6/PS) blends. The macroactivator P(St-co-IEM) was synthesized by the free radical polymerization of 2-isocyanatoethyl methacrylate and styrene (St), then the graft copolymer of PS and APA6 (PS-g-APA6) can be obtained by the anionic polymerization of E-caprolactam activated by the macroactivator P(St-co-IEM). The X-ray diffraction analysis, differential scanning calorimetry, scanning electron microscopy analysis, contact angle measurement, water absorption measurement, molau test, thermogravimetric analysis, and mechanical properties test were performed separately to study the effects of P(St-co-IEM) on crystallinity, morphology, water resistance, thermal stability, and mechanical properties. The results indicate the synthesis of macroactivator can promote the formation of the g-phase. Moreover, it can improve the interfacial compatibility, water resistance, thermal stability, and toughness. V C 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46302.

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The reactive compatibilization effect of copolymer macroactivator for immiscible anionic polyamide 6/polystyrene blends via in situ polymerization

Ying

J of Applied Polymer Sci

2018

Microscopy Res & Technique

“…Poly(methyl methacrylate) has low moisture absorption and high dimensional stability, therefore by grafting PMMA into the backbone of the polyamide‐6 fiber it was found that the water absorption of polyamide‐6‐ g ‐PMMA copolymer has been reduced from 4.8% for pure polyamide‐6 to 2.1%. Thus, the moisture resistance of graft copolymer is better than that of pure polyamide‐6 (Liu, Wang, Huang, & Xu, 2010). Therefore, a characterization study is needed to evaluate the influence of grafting on polyamide‐6 properties and determine the possible applications of the copolymer.…”

Section: Introductionmentioning

confidence: 99%

“…resistance of graft copolymer is better than that of pure polyamide-6 (Liu, Wang, Huang, & Xu, 2010). Therefore, a characterization study is needed to evaluate the influence of grafting on polyamide-6 properties and determine the possible applications of the copolymer.…”

mentioning

confidence: 99%

FECO fringes for investigating the effect of grafting process on the dispersion properties of polyamaide‐6 fibers

Sokkar

El‐Bakary

Sewidan

et al. 2021

Polyamide-6 fiber was modified by grafting it with poly(methyl methacrylate) PMMA polymer. The grafting process is widely used in industry to introduce new properties and overcome some obstacles, for instance, in storing energy applications. Multiplebeam interference techniques are very precise techniques to characterize the different properties of polymeric fibers. Fringes of equal chromatic order FECO technique was used to study the effect of grafting process on the dispersion properties of polyamides fibers. A mechanical drawing device was attached to the FECO system to evaluate the mechanical deformation impact on the samples and on their dispersion properties. The dispersion properties were evaluated by measuring their refractive indices, Cauchy's constants, average excitation energy, dispersion energy, lattice energy, interband oscillator wavelength, static dielectric constant, and Abbe's dispersion number. The results show that grafting polyamide-6 with PMMA produced a new material with a different structure and different dispersion properties. Microinterferograms, graphs and tables were given for illustrations.

“…The surface of polyamide 6 can be modified by grafting with various vinyl monomers as acrylate, acrylic and methacrylic acid (MAA) to allow the introduction of active functional groups onto a hydrophobic polymer backbone to have a better affinity with water [9][10][11][12][13][14]. In addition, nanosized inorganic and organic materials can be embedded through the electrospinning of polymer solution or matrix, similarly, nanometal oxides, can be incorporated as an additive to polymer matrix and used for multifunctional textile applications such ROKAYA A. SOBH et al…”

Section: Introductionmentioning

confidence: 99%

Fabrication of acrylic modified surface of polyamide 6/CaO electrospun nanofibrous membrane for effective dye removal

Sobh

Ekram²,

Mohamed³

2019

Egypt. J. Chem.

P OLYAMIDE 6 nanofibrous membrane of low molecular weight were obtained with various concentration between 25 and 45% (wt/v) by electrospinning of the polymer solution. Polyamide 6 nanofibers containing calcium oxide nanoparticles (PA6/CaO) were successfully obtained with various CaO concentration (0.2-1.0 % wt/wt). The structure of the electrospun nanofiber was studied with the aid of scanning electron microscopy that indicated that smooth and continuous electrospun nanofibers were obtained at optimum conditions with nanofibrous diameter about 60-70 nm and CaO nanoparticles were distributed through the nanofibers with a slightly increase in the nanofibrous diameter. The surfaces of the obtained PA6 and PA6/CaO nanofibers were modified by grafting polymerization with methacrylic acid MAA. The grafting polymerization was investigated through SEM and ATR-FTIR. The grafting polymerization was investigated also by examination of the sorption capacity of the produced modified PA6g-MAA and PA6/CaO-g-MAA nanofibrous membranes in removal of basic dye by studying removal of Basic Red BR18 dyestuff. The data showed that the percentage of dye removal using polyamide6 / CaO nanofibrous membrane grafted with MAA is more than that of grafted pure polyamide 6 nanofibrous membrane. The optimum conditions for removal of BR18 dye was observed at pH 10 under 60 o C.