Preparation and characterization of flexible polybenzoxazine–LLDPE composites

Rajput, Amit; Rahaman, Seikh J.; Sarkhel, Gautam; Ghosh, Narendra Nath

doi:10.1080/15685551.2012.725210

Cited by 7 publications

(4 citation statements)

References 42 publications

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“…6). This might be due to the binding role of compatibilizer (LgM), which enhanced chemical and physical interaction among the two separate phases (i.e., PB and LLDPE) and ultimately improved their interfacial adhesion by reducing the interfacial tension [34,50] . SEM micrograph of the composite (Fig.…”

Section: Mechanical Properties and Sem Analysismentioning

confidence: 99%

“…5 wt% LgM was used as compatibilizer between LLDPE and PB. 5 wt% LgM was chosen to prepare composites because we have observed that mixing of 5 wt% LgM with LLDPE and PB helps to achieve best mechanical property of LLDPE-PB composite [34] . Nanocomposites having different compositions of NiFe 2 O 4 , PB and LLDPE were prepared as listed in Table 1.…”

Section: Preparation Of Lldpe-lgm-pb-nife 2 O 4 (L-lgm-pb-nf) Compositesmentioning

confidence: 99%

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Preparation, Characterization and Properties of Flexible Magnetic Nanocomposites of NiFe₂O₄-polybenzoxazine-LLDPE

Rajput

Rahaman

Sarkhel

et al. 2013

Polymer-Plastics Technology and Engineering

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A simple method for the preparation of magnetic nanocomposites consisting of NiFe 2 O 4 nanoparticles, polybenzoxazine (PB), linear low-density polyethylene (LLDPE) and LLDPE-g-Maleic anhydride (LgM) is described. Composites were prepared by forming benzoxazine-NiFe 2 O 4 nanocomposites followed by melt blending with LLDPE and thermal curing of benzoxazine. The composites were characterized by XRD, DSC and TGA, FT-IR, SEM, UTM and VSM. The saturation magnetization of the composites containing 33.25 wt% NiFe 2 O 4 was 7.72 emu/g and it decreased with decreasing amount of NiFe 2 O 4 in the composite. The composite films exhibited mechanical flexibility as well as magnetic properties.

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Section: Mechanical Properties and Sem Analysismentioning

confidence: 99%

Section: Preparation Of Lldpe-lgm-pb-nife 2 O 4 (L-lgm-pb-nf) Compositesmentioning

confidence: 99%

Preparation, Characterization and Properties of Flexible Magnetic Nanocomposites of NiFe₂O₄-polybenzoxazine-LLDPE

Rajput

Rahaman

Sarkhel

et al. 2013

Polymer-Plastics Technology and Engineering

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“…showed that LLDPE has orthorhombic crystal lattice. [34][35][36][37][38] The crystallinity results of low molecular weight PE fibers produced at 400 m/min were given in Table 3. It is known from the literature [18,24,[39][40][41][42] that the crystallinity values (%) for LLDPE and HDPE polymers are generally between 30% and 70%.…”

Section: Morphologymentioning

confidence: 99%

Self‐assembled fibrillar polyethylene crystals with tunable properties

Seyhan

Günaydın

Polat

et al. 2020

Polymer Engineering & Sci

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Due to its simple linear chain structure, crystal morphology of linear low‐density polyethylene (LLDPE) fibers can be controlled to fulfill the needs of diverse advanced applications. This study presents a simple two‐step method to produce LLDPE fibers with self‐assembled fibrillar crystals and highly oriented amorphous phase. Rather than conventional melt spinning, fibers were treated in a two‐step eco‐friendly bath without drawing after extruded fibers emerge from the spinneret. Treated fibers through the baths demonstrated lower crystallinity, but significantly higher degree of crystal orientation when compared to control fibers of traditional melt spinning. Morphological analysis revealed that a unique microstructure was formed after spinning through a two‐step eco‐friendly bath. As‐spun fibers demonstrated spherulitic morphology which can be transformed into a fibrillar structure followed by post‐drawing process. Cross sectional images of the treated LLDPE fibers produced at 400 m/min showed fibrillar PE crystals which can be more dominant upon post‐drawing. After two‐step bath treatment, produced fibers need low draw ratios to exhibit high performance. Our novel modification followed by hot drawing process can manipulate internal structure with performance of PE fibers to an outstanding level of 0.35 GPa strength and 3 GPa modulus at a production speed of 400 m/min.

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“…During the past decades, it has been reported that a variety of techniques such as the surface treatment by means of plasma, flame, chemical reactions, coating deposition, surface migration of low molecular additives from bulk. [8][9][10][11][12][13][14][15][16][17] The widespreading applicability of the PE-based materials motivates the efforts to improve their surface properties via chemical or physical approaches.…”

Section: Introductionmentioning

confidence: 99%

On properties of graft copolymers of LLDPE and novel fluorine surfactants obtained via reactive extrusion

Xin

Yan

et al. 2014

Designed Monomers and Polymers

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A series of nonionic fluorin surfactants containing poly(ethylene glycol) (PEG) and their acrylates were synthesized using PEGs of different molecular weight (M w 600, 1000, 1500, 2000, 4600 g/mol), TDI, acryloyl chloride, and pentadecafluorooctanoic chloride as the main starting materials. Their chemical structures were characterized by means of FTIR and 1 H NMR. The surface tension (γ) of the fluorine surfactants were evaluated by drop weight method. The γ value was found to increase with the length of PEG chains. The acrylates were adopted as functionalizing monomers and grafted onto linear low-density polyethylene (LLDPE) through a melt reactive extrusion procedure. The graft degrees of LLDPE were determined by FTIR. Five graft LLDPE samples with grafting degrees of 0.79% (A-I), 0.72% (A-II), 0.68% (A-III), 0.63% (A-IV), and 0.57% (A-V) were prepared. Their surface properties were characterized by measuring contact angles with water and by X-ray Photoelectron Spectroscopy (XPS). Thermal properties of graft LLDPE samples were studied using differential scanning calorimetry. Crystallization rates of graft LLDPEs were faster than that of plain LLDPE at a given crystallization temperature because graft chains could act as nucleating agents. The isothermal crystallization behavior of grafted LLDPE was in accordance with the Avrami model only in the first stage of the process, and deviated from the model by increasing the crystallization time.

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Preparation and characterization of flexible polybenzoxazine–LLDPE composites

Cited by 7 publications

References 42 publications

Preparation, Characterization and Properties of Flexible Magnetic Nanocomposites of NiFe₂O₄-polybenzoxazine-LLDPE

Preparation, Characterization and Properties of Flexible Magnetic Nanocomposites of NiFe₂O₄-polybenzoxazine-LLDPE

Self‐assembled fibrillar polyethylene crystals with tunable properties

On properties of graft copolymers of LLDPE and novel fluorine surfactants obtained via reactive extrusion

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Preparation and characterization of flexible polybenzoxazine–LLDPE composites

Cited by 7 publications

References 42 publications

Preparation, Characterization and Properties of Flexible Magnetic Nanocomposites of NiFe2O4-polybenzoxazine-LLDPE

Preparation, Characterization and Properties of Flexible Magnetic Nanocomposites of NiFe2O4-polybenzoxazine-LLDPE

Self‐assembled fibrillar polyethylene crystals with tunable properties

On properties of graft copolymers of LLDPE and novel fluorine surfactants obtained via reactive extrusion

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Preparation, Characterization and Properties of Flexible Magnetic Nanocomposites of NiFe₂O₄-polybenzoxazine-LLDPE

Preparation, Characterization and Properties of Flexible Magnetic Nanocomposites of NiFe₂O₄-polybenzoxazine-LLDPE