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Rebuttal to Correspondence on “Effect of Mass Fraction on Leaching Kinetics of Hydrophobic Ultraviolet Stabilizers in Low-Density Polyethylene”
Environmental Science & Technology ( IF 11.4 ) Pub Date : 2024-04-24 , DOI: 10.1021/acs.est.4c03196
Anh T.Ngoc Do 1, 2 , Yeonjeong Ha 1, 3 , Jung-Hwan Kwon 1
Affiliation  

We appreciate Chen and Zhang (1) for their insightful comments on our article. (2) In their comment, they argued for the use of eq 1 instead of eq 2, which was used in our article, to describe the desorbed fraction of ultraviolet (UV) stabilizers from low-density polyethylene (LDPE) fibers. In our experimental system, C0 might be estimated from the distribution constants between LDPE and the co-solvent solution (KLDPEsm) and those between PDMS and the co-solvent solution (KPDMSsm). Although attempts have been made to derive these distribution constants, (3) they were not used to estimate the theoretical C0 because KLDPEsm cannot be a constant at larger mass fractions due to phase separation, as observed in Figure 1 of our article. (2) Values of Mt/M0 slightly lower than the theoretical predictions were observed for UV531, which does not exhibit phase separation at the largest mass fraction of 2.0 wt % in Figure 3 of our article after sufficient time had passed. (2) These can be attributed to the approximation error of using eq 2 instead of eq 1 and/or the experimental uncertainties. However, C0/C2 should be independent of the mass fraction of the UV stabilizers in LDPE if KLDPEsm and KPDMSsm remain constant. Thus, the larger deviation of Mt/M0 from the theoretical estimation at a larger mass fraction in Figure 2 is not due to the application of the approximated equation (eq 2), instead of eq 1, as argued by Chen and Zhang. (1) This article references 3 other publications. This article has not yet been cited by other publications. This article references 3 other publications.

中文翻译:

反驳《质量分数对疏水性紫外线稳定剂在低密度聚乙烯中浸出动力学的影响》的通讯

我们感谢陈和张 (1) 对我们文章的富有洞察力的评论。 (2) 在他们的评论中,他们主张使用方程 1 而不是我们文章中使用的方程 2,来描述低密度聚乙烯 (LDPE) 纤维中紫外线 (UV) 稳定剂的解吸分数。在我们的实验系统中,C 0可以根据LDPE和共溶剂溶液之间的分布常数( K LDPEsm )以及PDMS和共溶剂溶液之间的分布常数( K PDMSsm )来估计。尽管已经尝试推导这些分布常数,(3) 它们并未用于估计理论C 0 ,因为由于相分离, K LDPEsm在较大质量分数下不能是常数,如我们文章的图 1 中所观察到的。 (2) UV531 的M t / M 0值略低于理论预测值,在我们文章的图 3 中的最大质量分数 2.0 wt% 下,经过足够的时间后,它没有表现出相分离。 (2) 这些可以归因于使用式 2 而不是式 1 的近似误差和/或实验不确定性。然而,如果K LDPEsmK PDMSsm保持恒定,则C 0 / C 2应与LDPE中UV稳定剂的质量分数无关。因此,图 2 中质量分数较大时M t / M 0与理论估计值的较大偏差并不是由于应用了近似方程(eq 2),而是由于应用了 eq 1,正如 Chen 和Zhang 所主张的那样。 (1)本文引用了其他3篇出版物。这篇文章尚未被其他出版物引用。本文引用了其他 3 篇出版物。
更新日期:2024-04-24
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