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Polymers 2014, 6(2), 423-442; doi:10.3390/polym6020423

Biobased Contents of Natural Rubber Model Compound and Its Separated Constituents

1
National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan
2
The Japan Rubber Manufacturers Association (JRMA), Motoakasaka 1-5-26, Minato-ku, Tokyo 107-0051, Japan
*
Author to whom correspondence should be addressed.
Received: 30 December 2013 / Accepted: 7 February 2014 / Published: 10 February 2014
(This article belongs to the Special Issue Polymers from Biomass)
View Full-Text   |   Download PDF [1021 KB, uploaded 10 February 2014]   |  

Abstract

Production of rubber products with biobased constituents from biomass resources is desirable for conserving our planet’s limited resources and preventing global warming. Herein, a natural rubber model compound was produced to determine the biobased contents as per various indices for calculating the amount of biomass resources used in rubber products. The biobased mass and biobased carbon contents of the natural rubber model compound were 38.7% and 39.2%, respectively, which were calculated from the feed amounts of the constituents as per the International Organization for Standardization (ISO)/the draft of International Standard (DIS) 16620-2 and 16620-4. The model compound was separated into its constituents such as polymer, additive, carbon black, and zinc oxide using ISO 1407, 4650, 7720-2, and 9924-3. The biobased carbon content of this model compound was 37.6%, calculated from the percent of modern carbon (pMC), which was measured directly using accelerator mass spectrometry (AMS). The calculated values for this model compound agreed with those calculated from the feed amounts of the constituents. Thus, it was confirmed that these calculation and determination methods of the biobased mass and the biobased carbon contents for rubber products should be published as new ISO international standards after a discussion at technical committee 45, “rubber and rubber products” to evaluate rubber products with larger biobased contents of natural rubber and other biobased ingredients. View Full-Text
Keywords: biobased content; biobased mass content; biobased carbon content; rubber product; accelerator mass spectrometry; ISO 16620 biobased content; biobased mass content; biobased carbon content; rubber product; accelerator mass spectrometry; ISO 16620
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Kunioka, M.; Taguchi, K.; Ninomiya, F.; Nakajima, M.; Saito, A.; Araki, S. Biobased Contents of Natural Rubber Model Compound and Its Separated Constituents. Polymers 2014, 6, 423-442.

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