Effects of Solvents on Structure, Morphology and Thermal Stability of Polystyrene-HNTs Nanocomposites by Ultrasound Assisted Solution Casting Method

The purpose of this work was to produce nanocomposites of polylactic acid with oph-POSS (octaphenyl-Polyhedral Oligomeric Silsesquioxanes)-based biodegradable polyester and study morphology, thermal stability and degradation property. Oph-POSS was synthesized via limited-hydrolytic condensation of phenyl trimethoxysilane catalyzed by tetramethylammonium hydroxide. By adding different mass fractions of oph-POSS into the PLA matrix, oph-POSS/PLA nanocomposites were successfully prepared by the solution casting method using chloroform as solvent. SEM(scanning electron microscopy) observations indicated that oph-POSS were homogeneously dispersed in the PLA matrix. The biodegradation rate of oph-POSS/PLA composites was higher than that of neat PLA, moreover, the degradations of neat PLA and oph-POSS/PLA composites underwent the surface erosion mechanism. It was found that the existence of oph-POSS enhanced thermal stability slightly of nanocomposites relative to neat PLA; however, the thermal degradation mechanism of PLA remained unchanged.

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Morphology, Properties and Application of Iron Oxide/Polycaprolactone Nanocomposites

Journal of the chemical society of pakistan ◽

10.52568/000553/jcsp/43.01.2021 ◽

2021 ◽

Vol 43 (1) ◽

pp. 34-34

Author(s):

Khalid Saeed Khalid Saeed ◽

Noshi Khan Noshi Khan ◽

Tariq Shah and Muhammad Sadiq Tariq Shah and Muhammad Sadiq

Keyword(s):

Morphological Study ◽

Solution Casting ◽

Fe2o3 Nanoparticles ◽

Casting Method ◽

Scanning Calorimetry ◽

Pom Analyses ◽

Solution Casting Method ◽

Dsc Analyses ◽

Rhodamine B Dye ◽

Thermal Stability Of

Polycaprolactone (PCL) and Fe2O3/PCL nanocomposites sheets/films were prepared by solution casting method. The morphological study illustrated that Fe2O3 nanoparticles were dispersed and embedded well within the PCL matrix. The size of Fe2O3 nanoparticles were below 250 nm. The thermal stability of Fe2O3/PCL nanocomposites was lower than neat PCL, which might be due to Fe2O3 (act as catalyst during the thermal degradation of PCL). The differential scanning calorimetry (DSC) analyses show that the crystallization temperature of the nanocomposites was slightly enhanced as compared to neat PCL. The polarized optical microscopy (POM) analyses showed that the size of Fe2O3/PCL nanocomposites spherulites were smaller than neat PCL. The photodegradation study presented that the nanocomposites photodegraded higher quantity of rhodamine B dye as compared to neat PCL. The neat PCL degraded about 24 and 72% while Fe2O3 (6 wt%)/PCL nanocomposites degraded about 72 and 98% of dye within 2 and 10 h, respectively.

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Ternary hybrid (SPEEK/SPVdF-HFP/GO) based membrane electrolyte for the applications of fuel cells: profile of improved mechanical strength, thermal stability and proton conductivity

RSC Advances ◽

10.1039/c6ra22295a ◽

2016 ◽

Vol 6 (110) ◽

pp. 108851-108863 ◽

Cited By ~ 49

Author(s):

Mohanraj Vinothkannan ◽

Ae Rhan Kim ◽

Kee Suk Nahm ◽

Dong Jin Yoo

Keyword(s):

Thermal Stability ◽

Polyvinylidene Fluoride ◽

Hybrid Membranes ◽

Solution Casting ◽

Casting Method ◽

Ether Ether Ketone ◽

Poly Ether Ether Ketone ◽

Solution Casting Method ◽

Ether Ketone ◽

Sulfonated Poly

Ternary hybrid membranes composed of sulfonated (poly ether ether ketone) (SPEEK), sulfonated polyvinylidene fluoride-co-hexafluoropropylene (SPVdF-HFP) and 1, 3, 5 or 7 wt% graphene oxide (GO) were fabricated using a facile solution casting method.

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Morphology, Properties and Application of Iron Oxide/Polycaprolactone Nanocomposites

Journal of the chemical society of pakistan ◽

10.52568/000553 ◽

2021 ◽

Vol 43 (1) ◽

pp. 34-34

Author(s):

Khalid Saeed Khalid Saeed ◽

Noshi Khan Noshi Khan ◽

Tariq Shah and Muhammad Sadiq Tariq Shah and Muhammad Sadiq

Keyword(s):

Morphological Study ◽

Solution Casting ◽

Fe2o3 Nanoparticles ◽

Casting Method ◽

Scanning Calorimetry ◽

Pom Analyses ◽

Solution Casting Method ◽

Dsc Analyses ◽

Rhodamine B Dye ◽

Thermal Stability Of

Polycaprolactone (PCL) and Fe2O3/PCL nanocomposites sheets/films were prepared by solution casting method. The morphological study illustrated that Fe2O3 nanoparticles were dispersed and embedded well within the PCL matrix. The size of Fe2O3 nanoparticles were below 250 nm. The thermal stability of Fe2O3/PCL nanocomposites was lower than neat PCL, which might be due to Fe2O3 (act as catalyst during the thermal degradation of PCL). The differential scanning calorimetry (DSC) analyses show that the crystallization temperature of the nanocomposites was slightly enhanced as compared to neat PCL. The polarized optical microscopy (POM) analyses showed that the size of Fe2O3/PCL nanocomposites spherulites were smaller than neat PCL. The photodegradation study presented that the nanocomposites photodegraded higher quantity of rhodamine B dye as compared to neat PCL. The neat PCL degraded about 24 and 72% while Fe2O3 (6 wt%)/PCL nanocomposites degraded about 72 and 98% of dye within 2 and 10 h, respectively.

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Morphology, Properties and Application of Iron Oxide/Polycaprolactone Nanocomposites

Journal of the chemical society of pakistan ◽

10.52568/000012 ◽

2021 ◽

Vol 43 (1) ◽

pp. 34-34

Author(s):

Khalid Saeed Khalid Saeed ◽

Noshi Khan Noshi Khan ◽

Tariq Shah and Muhammad Sadiq Tariq Shah and Muhammad Sadiq

Keyword(s):

Morphological Study ◽

Solution Casting ◽

Fe2o3 Nanoparticles ◽

Casting Method ◽

Scanning Calorimetry ◽

Pom Analyses ◽

Solution Casting Method ◽

Dsc Analyses ◽

Rhodamine B Dye ◽

Thermal Stability Of

Polycaprolactone (PCL) and Fe2O3/PCL nanocomposites sheets/films were prepared by solution casting method. The morphological study illustrated that Fe2O3 nanoparticles were dispersed and embedded well within the PCL matrix. The size of Fe2O3 nanoparticles were below 250 nm. The thermal stability of Fe2O3/PCL nanocomposites was lower than neat PCL, which might be due to Fe2O3 (act as catalyst during the thermal degradation of PCL). The differential scanning calorimetry (DSC) analyses show that the crystallization temperature of the nanocomposites was slightly enhanced as compared to neat PCL. The polarized optical microscopy (POM) analyses showed that the size of Fe2O3/PCL nanocomposites spherulites were smaller than neat PCL. The photodegradation study presented that the nanocomposites photodegraded higher quantity of rhodamine B dye as compared to neat PCL. The neat PCL degraded about 24 and 72% while Fe2O3 (6 wt%)/PCL nanocomposites degraded about 72 and 98% of dye within 2 and 10 h, respectively.

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Enhanced mechanical, thermal, and UV-shielding properties of poly(vinyl alcohol)/metal–organic framework nanocomposites

RSC Advances ◽

10.1039/c8ra07143h ◽

2018 ◽

Vol 8 (67) ◽

pp. 38681-38688 ◽

Cited By ~ 13

Author(s):

Yibo Dai ◽

Qun Tang ◽

Ziang Zhang ◽

Caili Yu ◽

Heping Li ◽

...

Keyword(s):

Thermal Stability ◽

Vinyl Alcohol ◽

Metal Organic Framework ◽

Poly Vinyl Alcohol ◽

Solution Casting ◽

Casting Method ◽

Uv Shielding ◽

Metal Organic ◽

Solution Casting Method ◽

Shielding Properties

PVA/HKUST-1 nanocomposites prepared by a simple solution casting method displayed significantly enhanced thermal stability, mechanical and UV-shielding properties.

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Preparation and Properties of Poly(L-Lactid Acid)/Organo-Montmorillonite Composites by Solution Casting Method

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.731.578 ◽

2015 ◽

Vol 731 ◽

pp. 578-583

Author(s):

Ming Jun Niu ◽

Rui Xia Duan ◽

Li Xia Wang ◽

Xiao Qing Shen ◽

Kai Guo ◽

...

Keyword(s):

Tensile Strength ◽

Composite System ◽

Composite Films ◽

Solution Casting ◽

Casting Method ◽

Elongation At Break ◽

Steady Level ◽

Solution Casting Method ◽

Degree Of Order ◽

Thermal Stability Of

PLLA / OMMT composite films were prepared through solution casting method, in which chloroform was used as solvent. Mechanical, thermal and crystallization properties of neat PLLA and PLLA / OMMT composites films were investigated as well as morphology through scanning electron microscope. It was shown that tensile strength of PLLA / OMMT composite films gradually increased with increasing OMMT content, but reduced when more filler were added. Loading of 2wt% of OMMT seemed to benifit PLLA in tensile strength most. With the increase of montmorillonite content, the elongation at break of PLLA decreased first and then reached to a steady level. When compared with pure PLLA, the composite system showed decreased spherulite size, lower degree of order and an increase in the number of grains. Thermal analysis has proved that the addition of OMMT greatly enhanced crystability and thermal stability of PLLA.

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Fabrication and characterization of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) modified with nano-montmorillonite biocomposite

e-Polymers ◽

10.1515/epoly-2021-0006 ◽

2020 ◽

Vol 21 (1) ◽

pp. 038-046

Author(s):

Xu Yan ◽

Wanru Zhou ◽

Xiaojun Ma ◽

Binqing Sun

Keyword(s):

Thermal Stability ◽

Oxygen Permeability ◽

Water Vapor Permeability ◽

Barrier Properties ◽

Nucleating Agent ◽

Vapor Permeability ◽

Casting Method ◽

Increasing Trend ◽

Solution Casting Method

Abstract In this study, a poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) modified with nano-montmorillonite biocomposite (MMT/PHBH) was fabricated by solution-casting method. The results showed that the addition of MMT increased the crystallinity and the number of spherulites, which indicated that MMT was an effective nucleating agent for PHBH. The maximum decomposition peak of the biocomposites moved to a high temperature and residue presented an increasing trend. The biocomposites showed the best thermal stability at 1 wt% MMT. Compared with PHBH, 182.5% and 111.2% improvement in elastic modulus and tensile strength were obtained, respectively. Moreover, the oxygen permeability coefficient and the water vapor permeability of MMT/PHBH biocomposites decreased by 43.9% and 6.9%, respectively. It was also found that the simultaneous enhancements on the crystallizing, thermal stability, mechanical, and barrier properties of biocomposites were mainly caused by the formation of intercalated structure between PHBH and MMT.

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The Effect of Stereocomplex Polylactide Particles on the Stereocomplexation of High Molecular Weight Polylactide Blends

Polymers ◽

10.3390/polym13122018 ◽

2021 ◽

Vol 13 (12) ◽

pp. 2018

Author(s):

Muhammad Samsuri ◽

Ihsan Iswaldi ◽

Purba Purnama

Keyword(s):

Mechanical Properties ◽

Molecular Weight ◽

High Molecular Weight ◽

Nucleating Agent ◽

Solution Casting ◽

Casting Method ◽

Crystalline Fraction ◽

Crystalline Structures ◽

Solution Casting Method

Stereocomplexation is one of several approaches for improving polylactide (PLA) properties. The high molecular weight of poly L-lactide (PLLA) and poly D-lactide (PDLA) homopolymers are a constraint during the formation of stereocomplex PLAs (s-PLAs). The presence of s-PLA particles in PLA PLLA/PDLA blends can initiate the formation of s-PLA crystalline structures. We used the solution casting method to study the utilization of s-PLA materials from high molecular weight PLLA/PDLA blends for increasing s-PLA formation. The s-PLA particles initiated the formation of high molecular weight PLLA/PDLA blends, obtaining 49.13% s-PLA and 44.34% of the total crystalline fraction. In addition, the mechanical properties were enhanced through s-PLA crystalline formation and the increasing of total crystallinity of the PLLA/PDLA blends. The s-PLA particles supported initiation for s-PLA formation and acted as a nucleating agent for PLA homopolymers. These unique characteristics of s-PLA particles show potential to overcome the molecular weight limitation for stereocomplexation of PLLA/PDLA blends.

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