Hydrogen-bonded supramolecular polymers: A literature review

Armstrong, Gordon; Buggy, M.

doi:10.1007/s10853-005-6288-7

Cited by 111 publications

(81 citation statements)

References 47 publications

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“…It has also become the most widely used noncovalent interaction for the synthesis of supramolecular polymers and reversibly cross-linked polymer networks [61][62][63][64][65][66]. This is not due to the binding strength of hydrogen bonds, which is just 4-120 kJ mol À1 (Fig.…”

Section: Hydrogen Bondingmentioning

confidence: 99%

Supramolecular Polymer Networks: Preparation, Properties, and Potential

Rossow

Seiffert

2015

Advances in Polymer Science

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Section: Hydrogen Bondingmentioning

confidence: 99%

Supramolecular Polymer Networks: Preparation, Properties, and Potential

Rossow

Seiffert

2015

Advances in Polymer Science

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“…Supramolecular polymers, [1][2][3][4] polymers in which the monomeric units are held together by noncovalent interactions, form a novel class of materials, which has aroused considerable fundamental and practical interest. These polymers combine many properties of covalent polymers with those of low molecular weight materials, due to the reversibility of the noncovalent interactions.…”

Section: Introductionmentioning

confidence: 99%

Unidirectional Dimerization and Stacking of Ureidopyrimidinone End Groups in Polycaprolactone Supramolecular Polymers

et al. 2007

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The effect of stacking of end groups on the rheological behavior of supramolecular polymer melts is reported. Oscillatory shear experiments in the transition zone from the pseudo rubber plateau to the flow region of telechelic polycaprolactones (PCLs) with ureidopyrimidinone (UPy) end groups directly attached to PCL can be fitted with a single Maxwell element. This demonstrates that dimerization of the UPy groups is unidirectional and that reversible chain scission is faster than reptation. If the UPy groups are connected to the polymer via a urethane linker, a low-frequency plateau in G′ is observed. This is ascribed to the formation of a network of stacked UPy dimers, aided by urethane hydrogen bonding. Below their melting point, these stacks form long fibers in the urethane linked supramolecular poly(methyl caprolactone), which were observed with atomic force microscopy (AFM). Steric hindrance interferes with stacking, since the plateau in G′ is lower in a urethane linked polymer with bulky adamantyl-UPy end groups.

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“…31 The hydrogen bond energies are situated between 4 and 15 kCal mol −1 , much lower than covalent bond (e.g., the C-N energy bond in PA11 chains is ∼68 kCal mol −1 ), but much higher than the bond energy of Van der Waals forces between two atoms (<0.24 kCal mol −1 ). 32 Therefore, the fact that this bond energy is moderate allows it to be compensated by multiple hydrogen bonds along polyamide chain.…”

Section: Methodsmentioning

confidence: 99%

Role of Polyamide 11 Interaction with Clay and Modifier on Thermal, Rheological and Mechanical Properties in Polymer Clay Nanocomposites

Risite¹,

Mabrouk²,

Bousmina³

et al. 2016

j nanosci nanotechnol

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The relationship between the morphological observations and the physical properties of polyamide 11 (PA11)/clay nanocomposites prepared by melt processing was investigated with a special interest on the use of various contents of silane modified PA11 (PA-m-Si). PA-m-Si was prepared using 1 wt% of 3-aminopropyltriethoxysilane (APTES) added to PA11 in reactive extrusion. The morphological observations by TEM and XRD are presented in conjunction with the rheological and mechanical properties of these nanocomposites. The addition of PA-m-Si generated a net favorable interaction with organoclay that permitted higher level of exfoliation/intercalation resulting from a balance of component interactions. XRD spectra of nanocomposites revealed that the increase of PA-m-Si induced a decrease in peak intensities at high clay loadings (≥5 wt%) which informed about a reduction of stacks intercalated structure leading to a higher degree of delamination and a larger increase of aspect ratio of clay. The rheological properties suggest that the extent of a percolation network can be enhanced by increasing the degree of exfoliation/intercalation at fixed clay content. The tensile and thermal properties were also found to be improved in all cases.

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Hydrogen-bonded supramolecular polymers: A literature review

Cited by 111 publications

References 47 publications

Supramolecular Polymer Networks: Preparation, Properties, and Potential

Supramolecular Polymer Networks: Preparation, Properties, and Potential

Unidirectional Dimerization and Stacking of Ureidopyrimidinone End Groups in Polycaprolactone Supramolecular Polymers

Role of Polyamide 11 Interaction with Clay and Modifier on Thermal, Rheological and Mechanical Properties in Polymer Clay Nanocomposites

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