Study of hydrogen bonding and thermal properties of polybenzoxazine and poly-(?-caprolactone) blends

Ishida, Hatsuo; Lee, Yu-Hsin

doi:10.1002/1099-0488(20010401)39:7<736::aid-polb1048>3.0.co;2-r

Cited by 100 publications

(75 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar trend was also observed with the neat PCL blends [9]. It was shown that the cured products of such blends exhibit hydrogen bond formation between the hydroxyl groups of polybenzoxazine and the carbonyl groups of PCL.…”

Section: Resultssupporting

confidence: 81%

“…8. Only one exothermic peak was found for all concentrations which is similar to the benzoxazine monomer and its blend with neat PCL [9]. However, the curing exothermic peak shifts toward a higher temperature as the concentration of PCL-N-a increases.…”

Section: Resultsmentioning

confidence: 78%

“…It was reported that the miscible blends of polybisbenzoxazine (PB-a) and poly (3- hydrogen bonding between the hydroxyl groups of PB-a and the carbonyl groups of PCL [9]. In a more recent work, Zheng et al investigated the phase behavior and intermolecular specific interactions of the blends prepared in the same manner [10].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Synthesis and characterization of naphthoxazine functional poly(ε-caprolactone)

Kışkan

Yaǧcı

2005

Polymer

100

View full text Add to dashboard Cite

Section: Resultssupporting

confidence: 81%

Section: Resultsmentioning

confidence: 78%

See 1 more Smart Citation

Synthesis and characterization of naphthoxazine functional poly(ε-caprolactone)

Kışkan

Yaǧcı

2005

Polymer

100

View full text Add to dashboard Cite

“…Blends of BA-a have been formed with a variety of thermoplastics including polycarbonate 12 , poly(ethylene oxide) 13 and latterly -caprolactone 14,15,16 , in these instances the ability of the blend components to support the formation of hydrogen bonds facilitates improved miscibility, while reaction induced phase separation yields tougher matrices as a result of the new morphologies developed during processing. Reactive blends of BA-a are finding increasing interest in research and the use of epoxy co-monomers 17,18 are pre-eminent, forming the basis of commercial blends such as the Epsilon resins from Henkel 19 ; the addition of epoxy improving the processing characteristics of the benzoxazine and related ternary blends have been explored using phenolic co-monomers 20,21,22 .…”

Section: Methodsmentioning

confidence: 99%

Examining the influence of bisphenol A on the polymerisation and network properties of an aromatic benzoxazine

Hassan

Liu

Howlin

et al. 2016

Polymer

Self Cite

View full text Add to dashboard Cite

General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. Full terms of use are available: http://www.bristol.ac.uk/pure/about/ebr-terms ABSTRACT: A series of reactive blends, comprising a commercial benzoxazine monomer, 2,2- bis(3,4-dihydro-3-phenyl-2H-1,3-benzoxazine)propane, and bisphenol A is prepared andcharacterized. Thermal analysis and dynamic rheology reveal how the introduction of up to 15 wt % bisphenol A lead to a significant increase in reactivity (the exothermic peak maximum of thermal polymerization is reduced from 245 ºC to 215 ºC), with a small penalty in glass transition temperature (reduction of 15 K), but similar thermal stability (onset of degradation = 283 ºC, char yield = 26 %). With higher concentrations of bisphenol A (e.g. 25 wt %), a significantly more reactive blend is produced (exothermic peak maximum = 192 ºC), but with a significantly lower thermal stability (onset of degradation = 265 ºC, char yield = 22 %) and glass transition temperature (128 ºC). Attempts to produce a cured plaque containing 35 wt % bisphenol A were unsuccessful, due to brittleness. Molecular modelling is used to replicate successfully the glass transition temperatures (measured using thermal analysis) of a range of copolymers.

show abstract

“…We attribute the broad band for the hydrogen-bonded CdO groups at 1718 cm -l to steric effects (i.e., a wide distribution of intermolecular distances) in the phenol-pyridine hydrogen-bond-mediated supramolecular network. 60,61 We then calculated the area fraction of hydrogenbonded CdO groups using the equation…”

Section: Resultsmentioning

confidence: 99%

Hydrogen Bond-Mediated Self-Assembly of Polyhedral Oligomeric Silsesquioxane-Based Supramolecules

Shih¹,

Lu²,

Kuo³

et al. 2010

J. Phys. Chem. C

View full text Add to dashboard Cite

In this study, a functionalized pentaerythritol star polyester compound [tetrakis(nicotinoxymethyl)methane, TNMM] and an octakis[dimethyl(4-hydroxyphenethyl)siloxy]silsesquioxane (OP-POSS) were synthesized and used as tetrahedral and cubic building blocks, respectively, for three-dimensional, hydrogen-bond-mediated, polyhedral oligomeric silsesquioxane-(POSS-) based supramolecular network structures. With noncovalent chain extension of hydrogen bonds between its pyridine and phenol groups, the POSS-based supramolecular networks exhibited thermally reversible properties. Compared with the glass transition temperature of OP-POSS (ca. 20°C) and the melting temperature of TNMM (ca. 70°C), the hydrogen-bond-mediated miscible blend of 40 wt % TNMM in OP-POSS exhibited a single and higher glass transition temperature (37°C). Because of its strong intermolecular hydrogen bonding, the dewetting pattern of the blend of 40 wt % TNMM in OP-POSS formed ringlike structures rather than the droplets formed by pure OP-POSS. A transparent, brittle, and glassy solid at room temperature, the blend of 40 wt % TNMM in OP-POSS is an explicit and successful example of a POSS-based hydrogen-bonded supramolecular network.

show abstract

Study of hydrogen bonding and thermal properties of polybenzoxazine and poly-(?-caprolactone) blends

Cited by 100 publications

References 30 publications

Synthesis and characterization of naphthoxazine functional poly(ε-caprolactone)

Synthesis and characterization of naphthoxazine functional poly(ε-caprolactone)

Examining the influence of bisphenol A on the polymerisation and network properties of an aromatic benzoxazine

Hydrogen Bond-Mediated Self-Assembly of Polyhedral Oligomeric Silsesquioxane-Based Supramolecules

Contact Info

Product

Resources

About