Synthesis and characterization of 1,1-bis(3-methyl-4-hydroxy phenyl)cyclohexane polybenzoxazine–organoclay hybrid nanocomposites

Chozhan, C. Karikal; Alagar, Muthukaruppan; Gnanasundaram, P.

doi:10.1016/j.actamat.2008.10.023

Cited by 63 publications

(23 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…10. From the figure we can see that, T d5 (thermal decomposition temperature at 5 wt% weight loss) of composite films is higher than that of pure PMMA; noticeably, for PMMA/ GPMMA (1.0%), T d5 increases by w40 C. This improvement can be attributed to the layered structure which provides a tortuous pathway for the diffusion of degraded products [64,65]. Another criterion to evaluate thermal stability is the maximum decomposition temperature (T d,max ), which increases with the increase of GPMMA, as is shown in the inset curves of Fig.…”

Section: Synthesis and Characterization Of Pmma/gpmma Nanocompositesmentioning

confidence: 75%

Solvent exfoliated graphene for reinforcement of PMMA composites prepared by in situ polymerization

Wang

Shi

et al. 2012

Materials Chemistry and Physics

View full text Add to dashboard Cite

Section: Synthesis and Characterization Of Pmma/gpmma Nanocompositesmentioning

confidence: 75%

Solvent exfoliated graphene for reinforcement of PMMA composites prepared by in situ polymerization

Wang

Shi

et al. 2012

Materials Chemistry and Physics

View full text Add to dashboard Cite

“…Benzoxazines (Bzo) are a versatile class of thermoset resins synthesized by Mannich condensation between an aromatic alcohol, a primary amine and formaldehyde 5,6 . These resins are used as thermoset matrix for higher performance nanocomposites 45 because of their higher mechanical and thermal properties 7 .…”

Section: Introductionmentioning

confidence: 99%

“…POSS molecules have a cage-shaped three dimensional structure. 65 Among them, octasilsesquioxanes (R 8 Si 8 O 12 ) (n=8) have been mostly investigated as it consists of a rigid, cubic silica core, where each of the eight corners carries one organic group 6 . Unlike conventional inorganic fillers, POSS nanofillers offer the advantage of monodisperse size, low density and synthetically 70 well-controlled functionalities.…”

Section: Introductionmentioning

confidence: 99%

New benzoxazines containing polyhedral oligomeric silsesquioxane from eugenol, guaiacol and vanillin

2015

View full text Add to dashboard Cite

Polybenzoxazine-tethered polyhedral oligomeric silsesquioxane nanocomposites with well-defined architecture were prepared by the reaction of bio-phenols: eugenol, guaiacol, vanillin; poss-octaamine with paraformaldehyde. FT-IR measurements evidenced the 10 occurrence of Mannich reaction between phenolic group of bio-phenols and amino group of POSS molecule, with the consequent formation of a heterocyclic benzoxazine ring binding POSS in its backbone. Their chemical structures were proved by 1 H and 13 C-NMR analysis. Thermo-mechanical properties and thermal stability of the POSS-polybenzoxazine hybrid networks were determined by DSC, DMA and TGA. SEM, EDX, AFM and TEM micrographs show that POSS-Pbz nanocomposites exhibit featureless morphologies with no discernible phase separation, suggesting that the POSS nanoparticles are dispersed homogeneously throughout the matrix. The 15 homogeneity of these networks with octafunctional POSS is also indicated by their moduli in the range of 2.63 to 2.91 GPa. Moreover, their dielectric values [both dielectric constant (1.85) and dielectric loss (0.28)] and moisture absorption values are very low (<0.01%) which makes them suitable materials for use in microelectronics packaging.

show abstract

“…One is the restriction effect of PDA layers to the chain motion of PS at high temperature. The second is the continuous PDA layers in matrix could hinder the release of volatile degradation products . Finally, the good radical scavenge ability of PDA could eliminate the free radicals generated by the pyrolysis of CC bonds, and block the chain‐scission depolymerization .…”

Section: Resultsmentioning

confidence: 99%

Mussel‐inspired polydopamine/polystyrene composites with 3D continuous structure and improved thermal, mechanical, and flame retarding properties

Zhu

et al. 2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

Polymer materials are widely used in daily life, but the flammability of most polymers has greatly restricted their applications. The addition of flame retardants into polymer matrix to form composites is the most effective method to improve the flame retarding properties. Here, a novel flame retarding composite is reported from polydopamine (PDA) and polystyrene (PS) through a latex technique. To maximize the potential of PDA in improving the properties of composites, PDA layers are first coated on PS microspheres and then the PDA coated PS microspheres are hot pressed to afford PDA/PS composites. Morphological characterizations of the cross sections of composites and the char after burning demonstrate the formation of three‐dimensional continuous network of PDA layers inside PS matrix, while differential scanning calorimetry, thermogravimetric analysis, tensile test, and cone calorimeter test confirm the visibly enhanced thermal, mechanical, and flame retarding properties of composites as compared to neat PS. These improvements are attributed to the strong interfacial interactions between PDA and PS, physical barrier effect of continuous PDA layers, and good free‐radical scavenging ability of PDA. This work demonstrates the great potential of PDA as additive for green and facile construction of flame retarding composites. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47740.

show abstract

Synthesis and characterization of 1,1-bis(3-methyl-4-hydroxy phenyl)cyclohexane polybenzoxazine–organoclay hybrid nanocomposites

Cited by 63 publications

References 19 publications

Solvent exfoliated graphene for reinforcement of PMMA composites prepared by in situ polymerization

Solvent exfoliated graphene for reinforcement of PMMA composites prepared by in situ polymerization

New benzoxazines containing polyhedral oligomeric silsesquioxane from eugenol, guaiacol and vanillin

Mussel‐inspired polydopamine/polystyrene composites with 3D continuous structure and improved thermal, mechanical, and flame retarding properties

Contact Info

Product

Resources

About