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Synthesis and studies on phosphazene core-based POSS-reinforced polyimide nanocomposites

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Abstract

In the present work, phosphazene core-based polyimide and polyhedral oligomeric silsesquioxane (POSS)-reinforced phosphazene polyimide nanocomposites were developed and characterized. The molecular structure of cyclophosphazene amine (PZA) was confirmed by 1H, 13C NMR and MASS spectroscopic methods. The developed polyimide and its composites were studied for optical, thermal and dielectric properties along with their morphological studies. Interestingly, it was found that the incorporation of 10 wt% of POSS-reinforced PZI composites possesses an improved glass transition temperature (Tg), thermal stability, char yield and flame-retardant behavior than those of neat PZI matrix. The value of dielectric constant gets decreased with increasing the weight percentages of POSS reinforcement and thus 10 wt% POSS-reinforced PZI composites possesses the lowest value of dielectric constant (k = 2.1). Further, it also possesses the highest UV shielding behavior in UVA region, i.e., 93% with minimum weight loss even after exposing for 165 h. The antibacterial activity of the neat PZI matrix and POSS/PZI composites were also studied. The data obtained from different studies that it is suggested that the 10 wt% of POSS/PZI hybrid composite materials can be used in the form of coatings, sealants and matrices in aerospace as well as microelectronics applications.

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Authors and Affiliations

  1. Department of Chemistry, Vel Tech Multi Tech Dr. Rangarajan Dr Sakunthala Engineering College, Avadi, Chennai, 600 062, India

    Rajamanickam Revathi

  2. Department of Handloom and Textile Technology, Indian Institute of Handloom Technology, Salem, 636 001, India

    Pichaimani Prabunathan

  3. Centre of Excellence for Advanced Material Manufacturing, Processing and Characterization (CoExAMMPC), Vignan’s University, Vadlamudi, Guntur, 522 213, India

    Muthukaruppan Alagar

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  1. Rajamanickam Revathi
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  2. Pichaimani Prabunathan
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Correspondence to Muthukaruppan Alagar.

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Revathi, R., Prabunathan, P. & Alagar, M. Synthesis and studies on phosphazene core-based POSS-reinforced polyimide nanocomposites. Polym. Bull. 76, 387–407 (2019). https://doi.org/10.1007/s00289-018-2391-1

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