Biobased Contents of Natural Rubber Model Compound and Its Separated Constituents

Polymers

Masao Kunioka²  Kazuhiro Taguchi²  Fumi Ninomiya²  Mari Nakajima¹  Akira Saito¹ 

[1]The Japan Rubber Manufacturers Association (JRMA), Motoakasaka 1-5-26, Minato-ku, Tokyo 107-0051, Japan

[2] E-Mails:

[3]National Institute of Advanced Industrial Science and Technology (AIST), Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan

[4] E-Mails:

关键词: biobased content;    biobased mass content;    biobased carbon content;    rubber product;    accelerator mass spectrometry;    ISO 16620;   

DOI  :  10.3390/polym6020423

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.