Physico-chemical study of pistachio (Pistacia vera) nutshell particles as a bio-filler for eco-friendly composites

  • P Balasundar, P Narayanasamy, S Senthil, Naif Abdullah Al-Dhabi, R Prithivirajan, R Shyamakumar, Ramkumar Thulasiram, Subrahmanya Bhat K
  • Materials Research Express, August 2019, Institute of Physics Publishing
  • DOI: 10.1088/2053-1591/ab3b9b

Pistachio nutshell particles as a bio-filler for eco-friendly composites

What is it about?

Agro-industrial by-products are an alternative potential source to replace synthetic fibers /filler materials. Pistachio (Pistacia vera) nut processing industries producing Pistacia vera nutshell (PVNS) as waste in large quantity. The nutshells are characterized for the first time towards their Physico-chemical properties like particle size, structural, morphological, elemental, thermal and surface analysis. The thermal stability and degradation temperature of PVNS particles are 240.6 and 274.2 °C, respectively. The pore size and pore diameters are 38 mm3/g, 3.626 nm while the surface area is calculated as 0.392 m²/g. Thus, the PVNS particle characterization results show the required quality to meet as bio-filler in the polymer matrix to improve the bio-composite properties. Consequently, the agro-food industrial residues of Pistachio shell may be effectively used to develop the valuable ecofriendly practical applications in an automobile application such as car dashboard and doors.

Why is it important?

Agro-industrial residues could be a potential raw material for making fillers for polymer composites.


Dr Subrahmanya Bhat K
Manipal Institute Of Technology, Manipal Academy of Higher Education

We believe there is an immense potential for ago-residues as potential materials in polymeric composites. Our related publications: (i) G. T. Mahesha, B. S Shenoy B, M. Vijaya Kini, K. Subrahmanya Bhat, Preparation of unidirectional Grewia Serrulata reinforced polyester composites and evaluation of tensile and exural properties, J. Nat. Fibres, 13(5), 547-554, 2016. (ii) G. T. Mahesha, B. S Shenoy B, M. Vijaya Kini, K. Subrahmanya Bhat, Mechanical Characterization and water ageing behavior studies of Grewia serrulata bast reinforced thermoset composites, J. Nat. Fibres., 14(6), 788-800, 2017. (iii) Madhu P, Sanjay M R, Pradeep S, Subrahmanya Bhat K, Yogesha B, S. Siengchin, Characterization of cellulosic ber from Phoenix pusilla leaves as potential reinforcement for polymeric composites, J Mat. Res. Tech., 8(3), 2597-2604, 2019; Scopus-Q1. (iv) P. Senthamaraikannan, M.R. Sanjay, K S. Bhat, N. H. Padmaraj, M. Jawaid, Characterization of natural cellulosic ber from bark of Albizia amara, J. Nat. Fibers, 2018 (In press); DOI: 10.1080/15440478.2018.1453432.

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The following have contributed to this page: Dr Subrahmanya Bhat K