02264nas a2200361 4500008004100000022001400041245010900055210006900164260000800233300001300241490000800254520117500262653002201437653001301459653001201472653001401484653001701498653001301515653002901528653001401557653001201571653002101583653002401604653001701628653001301645653001401658100001801672700001901690700002501709700001701734700002101751856013001772 2017 eng d a0032-386100a Design and development of trivalent aluminum ions induced self healing polyacrylic acid novel hydrogels0 aDesign and development of trivalent aluminum ions induced self h cSEP a 196-2050 v1263 a

Development of ionically crosslinked superabsorbent polyacrylic acid (PAA) self-healing hydrogels using trivalent aluminum ions was investigated. The PAA hydrogels exhibited excellent self-healing behavior depending on the amount of the aluminum within the matrix. The migration of these ions within the polymer matrix was responsible for the physical crosslinking of the hydrogel and the origin of self healing ability. The PAA-Al hydrogels were insoluble in water and exhibited significantly high degree of swelling (similar to 4000%). Hydrogel also exhibited good mechanical properties with high level of elongation. Excellent self-healing efficiency was observed under dynamic as well as oscillatory Theological measurements. The presence of Al ions within PAA hydrogel facilitated the self-healing ability because of the ionic interaction in these gels which plays the key role of dynamic reversible sacrificial bonds which reforms upon reversal of the deformative force. (C) 2017 Elsevier Ltd. All rights reserved.

10aAluminum chloride10aBehavior10aComplex10aComposite10acrosslinking10aDelivery10aHigh-Mechanical Strength10ahydrogels10aNetwork10aPolyacrylic acid10aPolymeric Materials10aSelf-healing10aswelling10aTough; pH1 aAnjum, Sadiya1 aGurave, Pramod1 aBadiger, Manohar, V.1 aTiwari, Neha1 aGupta, Bhuvanesh uhttps://library.ncl.res.in/content/design-and-development-trivalent-aluminum-ions-induced-self-healing-polyacrylic-acid-novel01955nas a2200253 4500008004100000022001400041245007600055210006900131260000800200300001100208490000800219520119600227653001401423653001701437653002601454653001401480100002501494700001801519700002801537700001901565700002501584700002001609856007201629 2022 eng d a1385-894700aVitrimers based on bio-derived chemicals: overview and future prospects0 aVitrimers based on bioderived chemicals overview and future pros cAPR a1332610 v4333 aThe perspective of using recyclable and biobased materials in the vitrimeric concept is attractive, in view of the regulatory guidelines and pressing need to reduce CO2-emissions. The expansion of viable bio-based polymeric materials is gaining increased attention to achieve sustainable development goals. Although durability, cost, and performance still limit their real life applications, these limitations can be overcome through state-of-the-art bio-vitrimeric materials displaying thermoset like mechanical and thermal properties as well as thermoplastic like malleable and thus recyclable properties. Bio-derived chemicals based vitrimers can be of advantage, where material design is made from scratch, allowing to plan material properties in line with their future life cycle from the very beginning. This article emphasizes the current needs of vitrimers based on bio-derived chemicals, including their recycling, reprocessing, and self-healing properties, along with their advantages and potential obstacles from todays’ perspective. The article also identifies potential bio-derivatives as attractive building blocks for vitrimers because of their potential for sustainability.10aRecycling10aSelf-healing10aSustainable materials10aVitrimers1 aKrishnakumar, Balaji1 aPucci, Andrea1 aWadgaonkar, Prakash, P.1 aKumar, Indresh1 aBinder, Wolfgang, H.1 aRana, Sravendra uhttps://www.sciencedirect.com/science/article/pii/S138589472104836102608nas a2200253 4500008004100000022001400041245011100055210006900166260000800235300001600243490000600259520173400265653001601999653002102015653001802036653001702054653002802071100002402099700002302123700002202146700002902168700002702197856013002224 2025 eng d a2637-610500aTriple G-C-T base-coded nucleobase self-assembling monomers featuring polymerizable groups for 3D printing0 aTriple GCT basecoded nucleobase selfassembling monomers featurin cNOV a15619-156280 v73 a

Self-assembling monomers (SAMs) offer a versatile strategy for enhancing the performance of photoresins in Digital Light Processing (DLP) 3D printing. In this work, we report the design and synthesis of two photoprintable, nucleobase-inspired SAMs featuring a triple G-C-T base-coded hydrogen-bonding motif. This SAM was formulated using 2-hydroxyethyl acrylate (2-HEA), 1,6-hexanediol diacrylate (HDDA), and diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO) to prepare UV-curable resins suitable for high-resolution DLP printing. Remarkably, the printed samples exhibited supramolecular self-assembly, facilitated by dynamic hydrogen bonding, demonstrating a notable enhancement in thermal and mechanical performance when compared to the control sample. Thermal properties evaluated by a differential scanning calorimeter revealed an increase in the glass transition temperature (T-g) from 15 degrees C to 54 degrees C for SAM-incorporated printed materials. Mechanical testing demonstrated a >200% increase in toughness and >150% improvement in tensile strength relative to the unmodified resin while maintaining or exceeding the original elongation at break (up to similar to 74%). Variable-temperature FTIR spectroscopy confirmed the presence of thermally responsive supramolecular interactions. Notably, self-healing behavior was observed in both GCT-A 15 wt % and GCT-S 15 wt % formulations, indicating partial recovery of mechanical integrity under mild thermal conditions due to reversible hydrogen bonding. These findings demonstrate the potential of SAMs as functional additives for developing robust, thermally stable, and self-healing DLP-printed materials for advanced engineering applications.

10a3D printing10ahydrogen bonding10aSelf-assembly10aSelf-healing10aTriple G-C-T nucleobase1 aGawande, Akshay, J.1 aKamble, Ganesh, N.1 aSingh, Dharmendra1 aSanjayan, Gangadhar., J.1 aNair, Kiran, Sukumaran uhttps://library.ncl.res.in/content/triple-g-c-t-base-coded-nucleobase-self-assembling-monomers-featuring-polymerizable-groups