A. P.  Kumar, Depan, D., and Singh, R. P., ?Durability of natural fiber-reinforced composites of ethylene-propylene copolymer under accelerated weathering and composting conditions?, Journal of Thermoplastic Composite Materials, vol. 18, no. 6, pp. 489-508, 2005.

H. - R.  Liu, Gomes, P. T., Costa, S. I., Duarte, M. T., Branquinho, R., Fernandes, A. C., Chien, J. C. W., Singh, R. P., and Marques, M. M., ?Highly active new alpha-diimine nickel catalyst for the polymerization of alpha-olefins?, Journal of Organometallic Chemistry, vol. 690, no. 5, pp. 1314-1323, 2005.

S. N.  Fernandes, Correia, S., Prasad, A. V., Reddy, K. R., Rana, S., Lonkar, S. P., Marques, M. M., and Singh, R. P., ?Photodegradation of ethylene/propylene/polar monomers co- and terpolymers. I - Prepared by group 4 catalyst systems?, Journal of Macromolecular Science-Pure and Applied Chemistry, vol. A42, pp. 1259-1270, 2005.

J. K.  Pandey, Kumar, A. P., Misra, M., Mohanty, A. K., Drzal, L. T., and Singh, R. P., ?Recent advances in biodegradable nanocomposites?, Journal of Nanoscience and Nanotechnology, vol. 5, no. 4, pp. 497-526, 2005.

S.  Mishra, Sonawane, S. H., and Singh, R. P., ?Studies on characterization of nano CaCO3 prepared by the in situ deposition technique and its application in PP-nano CaCO3 composites?, Journal of Polymer Science Part B: Polymer Physics, vol. 43, no. 1, pp. 107-113, 2005.

A. P.  Kumar, Reddy, K. R., Rana, S., Lonkar, S. P., Raut, K. G., and Singh, R. P., ?Synthesis, characterization, and performance evaluation of novel stabilized TDI-based polyurethane coatings under accelerated weathering?, Journal of Vinyl & Additive Technology, vol. 11, no. 1, pp. 13-20, 2005.

S. P.  Lonkar, Rana, S., Singh, R. P., Lacoste, J., Gardette, J. Luc, Jestin, F., and Brocord, E., ?Synthesis, characterization, and performance evaluation of polymeric HALS in ethylene-propylene-diene terpolymer (EPDM)?, Journal of Macromolecular Science, Part A: Pure and Applied Chemistry , vol. A42, no. 8, pp. 1037-1046, 2005.

S. A. S.  Alariqi, Kumar, A. P., Rao, B. S. M., and Singh, R. P., ?Biodegradation of gamma-sterilised biomedical polyolefins under composting and fungal culture environments?, Polymer Degradation and Stability, vol. 91, no. 5, pp. 1105-1116, 2006.

F.  Delor-Jestin, Tomer, N. S., Singh, R. P., and Lacoste, J., ?Characterization of polydimethylsiloxane rubber upon photochemical, thermal, salt-fog ageings and exposure to acid vapours?, E-Polymers, p. Article No. 013, 2006.

P.  A. Kumar, Pandey, J. K., Kumar, B., and Singh, R. P., ?Photo-bio-degradability of agro waste and ethylene-propylene copolymers composites under abiotic and biotic environments?, Journal of Polymers and the Environment, vol. 14, no. 2, pp. 203-212, 2006.

S.  Morlat-Therias, Fanton, E., Tomer, N. S., Rana, S., Singh, R. P., and Gardette, J. Luc, ?Photooxidation of vulcanized EPDM/montmorillonite nanocomposites?, Polymer Degradation and Stability, vol. 91, no. 12, pp. 3033-3039, 2006.

S.  Rana, Tevtia, A. K., Kumar, B., and Singh, R. P., ?Preparation and performance evaluation of EPDM nanocomposites under accelerated weathering?, Journal of Thermoplastic Composite Materials, vol. 19, no. 5, pp. 461-474, 2006.

S. A. S.  Alariqi, A. Kumar, P., Rao, B. S. M., Tevtia, A. K., and Singh, R. P., ?Stabilization of gamma-sterilized biomedical polyolefins by synergistic mixtures of oligomeric stabilizers?, Polymer Degradation and Stability, vol. 91, no. 10, pp. 2451-2464, 2006.

N. S.  Tomer, Delor-Jestin, F., Singh, R. P., and Lacoste, J., ?Cross-linking assessment after accelerated ageing of ethylene propylene diene monomer rubber?, Polymer Degradation and Stability  , vol. 92, no. 3, pp. 457-463, 2007.

S. N.  Fernandes, Correia, S., Matos, I., Marques, M. M., Rana, S., Kumar, B., Gupta, M. K., and Singh, R. P., ?Photodegradation of ethylene/propylene/polar monomers, Co-, and terpolymers. II. prepared by Ni catalyst systems?, Journal of Applied Polymer Science, vol. 104, no. 3, pp. 1783-1791, 2007.

B.  Kumar, Rana, S., and Singh, R. P., ?Photo-oxidation of EPDM/layered double hydroxides composites: influence of layered hydroxides and stabilizers?, Express Polymer Letters, vol. 1, no. 11, pp. 748-754, 2007.

S. A. S.  Alariqi, A. Kumar, P., Rao, B. S. M., and Singh, R. P., ?Stabilization of gamma-sterilized biomedical polyolefins by synergistic mixtures of oligomeric stabilizers. part II. polypropylene matrix?, Polymer Degradation and Stability, vol. 92, no. 2, pp. 299-309, 2007.

R.  K. Reddy, Kumar, B., Rana, S., Tevtia, A. K., and Singh, R. P., ?Synthesis and characterization of hindered amine light stabilizers based on end functionalization of polypropylene?, Journal of Applied Polymer Science, vol. 104, no. 3, pp. 1596-1602, 2007.

S. A. S.  Alariqi, A. Kumar, P., Rao, B. S. M., and Singh, R. P., ?Effect of gamma-dose rate on crystallinity and morphological changes of gamma-sterilized biomedical polypropylene?, Polymer Degradation and Stability, vol. 94, no. 2, pp. 272-277, 2009.

S. P.  Lonkar and Singh, R. P., ?Isothermal crystallization and melting behavior of polypropylene/layered double hydroxide nanocomposites?, Thermochimica Acta, vol. 491, no. 1-2, pp. 63-70, 2009.

B.  Kumar, Kumar, I., and Singh, R. P., ?Photodegradation of EPDM/MWCNT nanocomposites: effect of singlet oxygen?, Polymer Composites, vol. 30, no. 7, pp. 855-860, 2009.

S. P.  Lonkar, Morlat-Therias, S., Caperaa, N., Leroux, F., Gardette, J. Luc, and Singh, R. P., ?Preparation and nonisothermal crystallization behavior of polypropylene/layered double hydroxide nanocomposites?, Polymer, vol. 50, no. 6, pp. 1505-1515, 2009.

S. A. S.  Alariqi and Singh, R. P., ?Effect of gamma-dose rate on biodegradation of gamma-sterilized biomedical polyolefins?, Journal of Polymers and the Environment, vol. 18, no. 4, pp. 600-607, 2010.

S. A. S.  Alariqi, Singh, R. P., and Rao, B. S. M., ?Gamma-initiated oxidation of isotactic polypropylene: effect of gamma-dose rate on durability?, Arabian Journal for Science and Engineering, vol. 36, no. 1, pp. 29-38, 2011.

M. S.  Sureshkumar, Goyal, R. K., Negi, Y. S., Pratheepkumar, A., K. Reddy, R., Singh, R. P., Dadge, J. W., and Aiyer, R. C., ?Studies on the feasibility of recycled polystyrene doped with NLO active meta-Nitroaniline for optoelectronics applications?, Polymers for Advanced Technologies, vol. 22, no. 12, pp. 1865-1871, 2011.

S. P.  Lonkar, Kushwaha, O. S., Leuteritz, A., Heinrich, G., and Singh, R. P., ?Self photostabilizing UV-durable MWCNT/polymer nanocomposites?, RSC Advances, vol. 2, no. 32, pp. 12255-12262, 2012.

R. S.  Mehare, Lonkar, S. P., and Singh, R. P., ?Synthesis and characterization of a new diol-functionalized s-triazine-based polymerizable hindered amine light stabilizer?, Journal of Vinyl & Additive Technology, vol. 18, no. 3, pp. 204-208, 2012.

I.  Matos, Fernandes, S. N., Liu, H. - R., Tevtia, A. K., Singh, R. P., Manda, L., Lemos, F., and Marques, M. M., ?Copolymerization of ethylene with unsaturated alcohols and methylmethacrylate using a silylated alpha-diimine nickel catalyst: molecular modeling and photodegradation studies?, Journal of Applied Polymer Science, vol. 129, no. 4, pp. 1820-1832, 2013.

O. S.  Kushwaha, Avadhani, C. V., and Singh, R. P., ?Preparation and characterization of self-photostabilizing UV-durable bionanocomposite membranes for outdoor applications?, Carbohydrate Polymers, vol. 123, pp. 164-173, 2015.