Nonrubber components (NRCs) play an important role in the outstanding mechanical property of natural rubber (NR). The main inositol component of NRCs in natural rubber latex (NRL) is l -quebrachitol. In this study, the influence of l -quebrachitol on the properties of centrifuged natural rubber (CNR) was investigated. The NRL was centrifuged twice to remove most of the NRCs. After that, l -quebrachitol was added in the latex with per hundreds of rubber (phr) vary from 0% to 0.8%, and the vulcanized CNR were prepared. It is shown that the properties of vulcanized CNR were greatly changed, with T 90 reduced from 19 to 15 min, the tensile strength increased from 5 to 9 MPa, T g reduced by about 2°C, and the ability for strain-induced crystallization was enhanced. It was proved by FTIR results that l -quebrachitol was linked to the CNR crosslinking network with ester bond.

中文翻译：

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l-邻苯二酚对离心天然橡胶性能的影响

非橡胶组分（NRC）在天然橡胶（NR）的出色机械性能中起着重要作用。天然橡胶胶乳（NRL）中NRC的主要肌醇成分是1-quebrachitol。在这项研究中，研究了1-quebrachitol对离心天然橡胶（CNR）性能的影响。将NRL离心两次以除去大部分NRC。之后，以每百份橡胶（phr）从0％至0.8％变化的方式向乳胶中添加1-quebrachitol。制备硫化的CNR。结果表明，硫化CNR的性能发生了很大变化，T 90从19降低到15 min，抗拉强度从5 MPa增加到9 MPa，T g降低了约2°C，并且具有应变诱导结晶的能力。增强了。