@article {48682,
	title = {Evaluation of the adhesive properties of vanillin-derived polyhydroxy urethanes},
	journal = {Journal of Applied Polymer Science},
	volume = {140},
	year = {2023},
	month = {Dec},
	pages = {e54647},
	type = {Article},
	abstract = {<p>
	Poly(hydroxy urethanes) (PHUs) have been considered attractive and safer variants of conventional polyurethanes (PUs). To improve the prerequisites of green and sustainable chemistry herein, we propose the synthesis and utilization of cyclic carbonate monomers majorly derived from vanillin, a lignin derivative, and CO2 for the development of PHUs. Kinetic evaluation on the polymerization temperature ascertained 80 degrees C as the optimum condition for PHU synthesis. The structural evaluation of PHUs was carried out by various spectroscopic techniques, such as FTIR, (HNMR)-H-1, and C-13-NMR, molar masses were determined by gel permeation chromatography (Mn varied between 2500 and 11,100 g/mol), and thermal properties evaluated by differential scanning calorimeter (Tg in the ranges of 28-42 degrees C), and thermogravimetric analysis (stable above 180 degrees C). Since the PHUs are enriched with pendant hydroxyl groups on their backbone which can promote adhesion, lap shear studies on the aluminum substrate exhibited a maximum shear strength of 1.65 +/- 0.37 MPa. This study demonstrates an attractive and environment-friendly pathway for developing novel PHUs network using renewable biobased resources and further explores its applicability as adhesives.</p>
},
	keywords = {adhesive, biobased cyclic dicarbonate, diamines, poly(hydroxyurethane)s, Vanillin},
	issn = {0021-8995},
	doi = {10.1002/app.54647},
	author = {Ghuge, Gorakh Hiraman and Kambikanam, Karthika Vayalachery and Nair, Kiran Sukumaran}
}
@article {49293,
	title = {Biobased reusable nonisocyanate polyurethane hot-melt adhesives with potential chemical degradability},
	journal = {ACS Applied Polymer Materials},
	volume = {6},
	year = {2024},
	month = {SEP},
	pages = {11180-11192},
	type = {Article},
	abstract = {<p>
	Hot-melt adhesives (HMAs) derived from renewable resources are always attractive, as they promote less dependence on fossil resources and aid in developing environmentally friendly materials. However, developing sustainable HMAs exhibiting good adhesive performance and biodegradability remains challenging. Herein, reusable biobased HMAs with a high bio content of 88-90\%, biodegradability, and tunable adhesive nature were developed as a possible alternative to conventional petroleum-based hot-melt adhesives. Moreover, the structure-property relationship of the product was investigated in detail. By tailoring the monomer composition, NIPU-40 HMA exhibited a good bonding ability with a superior adhesion strength of 6.39 MPa. To the best of our knowledge, this is the highest adhesion strength observed when bonding with an Al substrate among the biobased thermoplastic NIPU-HMAs. Impressively, NIPU-HMAs could display excellent reusability even after three bonding and debonding cycles without a significant drop in the adhesive strength and were found to exhibit good adhesion performance under wet conditions. More importantly, the NIPU-HMAs are prone to degradation under acid-catalyzed conditions. Considering their features, these biobased NIPU thermoplastic hot-melt adhesives offer an opportunity to create environmentally friendly, degradable adhesives that possess excellent adhesive strength and can be reused multiple times.</p>
},
	keywords = {acid degradability, biobased NIPUs, cyclic carbonates, hot meltadhesives, lap shearstrength, spiro-aromatic},
	issn = {2637-6105},
	doi = {10.1021/acsapm.4c01526},
	author = {Ghuge, Gorakh Hiraman and Torris, Arun and Nair, Kiran Sukumaran}
}
@article {49268,
	title = {Thrombin immobilized hemocompatible radiopaque polyurethane microspheres for topical blood coagulation},
	journal = {JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A},
	volume = {113},
	year = {2025},
	month = {JAN},
	type = {Journal Article},
	keywords = {ALGINATE MICROSPHERES, ENDOVASCULAR TREATMENT, PRECISE LOCALIZATION},
	issn = {1549-3296},
	doi = {10.1002/jbm.a.37828},
	author = {Naik, Sonali S. and Torris, Arun and Ghuge, Gorakh Hiraman and Karthika, V. K. and Joseph, Roy and Nair, Kiran Sukumaran}
}
