Downcomer for 105KW and KE project CA-512-R

Robinson, Thompson; Marinos, D.

doi:10.2172/10162044

Cited by 2 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The high adhe siveness is likely attributed to the hydroxyl groups on each sub strate, as the strong adhesion properties of TN hydrogels are derived from the hydrogen bonding between the imidazole and hydroxyl groups of the PHEAAPI polymers and substrate surface, respectively. As there are various functional groups capable of hydrogen bonding in bone, [39] including hydroxyl and phosphate groups (Figure S6, Supporting Information), the strong adhesion of TN hydrogel to bone could also be derived via hydrogen bonds between the imidazole groups and bone surface.…”

Section: Adhesive Tn Hydrogel With High Adhesiveness To Bonementioning

confidence: 99%

Bone‐Adhesive Anisotropic Tough Hydrogel Mimicking Tendon Enthesis

et al. 2022

View full text Add to dashboard Cite

consist of soft collagen with a water con tent of around 60-80%, their unique structural characteristics provide high tensile strength and excellent fatigue resis tance. [1][2][3][4] The high strength of tendons is derived from the hierarchical structure and anisotropy of collagen fibers formed by crosslinking collagen molecules and gathered to form larger bundles. Tendon tobone integration, called enthesis, is another important feature of tendons. The enthesis is the part where the tendon and ligament insert into the bone and transmit the mechanical load from muscle to bone. The enthesis is composed of four zones (pure dense fibrous connective tissue, uncalcified fibrocartilage, calcified fibro cartilage, and bone) exhibiting gradients in tissue organization with varying cellular composition (collagentomineral), which leads to high adhesive, mechanical prop erties between the tendon and bone. [5][6][7][8] The strong mechanical properties of anisotropic, hierarchically aligned collagen fibers in tendons and the unique tendonto bone integration enable an effective transfer of high mechan ical stress. In general, this unique and complex interface and the corresponding mechanical properties of tendon and liga ment are difficult to mimic using biomaterials.Recently, there have been significant advances in hydrogels exhibiting high mechanical properties or adhesive characteris tics which are extensively improved compared to that of con ventional hydrogels. However, most reported hydrogels either have high adhesion but significantly inferior mechanical properties than those of tendons [9][10][11][12][13][14][15][16][17][18][19] or have strong mechanical properties but very weak adhesion. [20][21][22][23][24][25][26][27][28][29][30][31][32][33] Very recent studies have attempted to simultaneously achieve high adhesiveness and excellent mechanical properties of hydrogels for bioad hesion; [34][35][36] nevertheless those hydrogels are far softer than the tendon. Also, most of them have focused on the adhe sion to relatively soft tissues such as heart, skin, cartilage, and tendon; [9][10][11][12][13][14][15][16][17][18][19]35,36] there have been no reports on mechanically enhanced hydrogel with strong adhesion to the bone. This is due to the tradeoff between the high modulus or strength of hydrogel and its adhesiveness; it is hard to achieve high adhe sion of stiff and strong hydrogels to a solid surface.Hence, this study proposes an anisotropic, stiff, and strong hydrogel with a high adhesiveness to the bone, mimicking both the mechanical properties of the tendon and the tendon tobone interface. A tough triple network (TN) hydrogel Tendon consists of soft collagen, yet it is mechanically strong and firmly adhered to the bone owing to its hierarchically anisotropic structure and unique tendon-to-bone integration (enthesis), respectively. Despite the recent advances in biomaterials, hydrogels simultaneously providing tendon-like high mechanical properties and strong adhesion to bone-mimicking enthesis is still challenging....

show abstract

Section: Adhesive Tn Hydrogel With High Adhesiveness To Bonementioning

confidence: 99%

Bone‐Adhesive Anisotropic Tough Hydrogel Mimicking Tendon Enthesis

et al. 2022

View full text Add to dashboard Cite

show abstract

“…From the disappearance of HS radicals upon addition of reactants and the formation of products rate constants for the following reactions have been determined: H S + F -+ H F + S , k(2) = (2.0 f 0.4). 10-10cm3s-' (2) HS + NO2 --t HSO + NO, k(10) = (1.2 0.2).10-'0cm3s-'…”

mentioning

confidence: 99%

“…The man-made H2S in the atmosphere results from a number of sources that also produce SOZ. Although considerable amounts of H2S are estimated to be released world wide into the atmosphere [2] its steady-state concentration is rather low [3]. It is generally accepted that atmospheric HzS is rapidly converted to SOz and sulfate which are both washed out by rain.…”

mentioning

confidence: 99%

Kinetics of the Reaction of Atomic Fluorine with H₂S and Elementary Reactions of the HS Radical

Schönle

Rahman

Schindler

1987

Ber Bunsenges Phys Chem

View full text Add to dashboard Cite

The reaction of H2S with atomic fluorine (1) has been studied in a discharge-flow system at 298 K to generate HS radicals for kinetic investigations. Mass spectrometric detection with single ion counting was employed. The rate constant k (1) was obtained from the rate of H2S consumption under the condition [HzS] 4 [Fl0 Radicals F + H2S + HF + HS, k(1) = (1.28 0.04). lo-'' cm3 s -' . Ber. Bunsenges. Phys. Chem. 91, 66-75 (1987) -0 VCH Verlagsgesellschaft mbH, D-6940 Weinheim, 1987.

show abstract

Downcomer for 105KW and KE project CA-512-R

Cited by 2 publications

References 0 publications

Bone‐Adhesive Anisotropic Tough Hydrogel Mimicking Tendon Enthesis

Bone‐Adhesive Anisotropic Tough Hydrogel Mimicking Tendon Enthesis

Kinetics of the Reaction of Atomic Fluorine with H₂S and Elementary Reactions of the HS Radical

Contact Info

Product

Resources

About

Downcomer for 105KW and KE project CA-512-R

Cited by 2 publications

References 0 publications

Bone‐Adhesive Anisotropic Tough Hydrogel Mimicking Tendon Enthesis

Bone‐Adhesive Anisotropic Tough Hydrogel Mimicking Tendon Enthesis

Kinetics of the Reaction of Atomic Fluorine with H2S and Elementary Reactions of the HS Radical

Contact Info

Product

Resources

About

Kinetics of the Reaction of Atomic Fluorine with H₂S and Elementary Reactions of the HS Radical