| Id |
Subject |
Object |
Predicate |
Lexical cue |
| T134 |
0-146 |
Sentence |
denotes |
Physical treatments employing UV irradiation, oven-dry, and microwave irradiation caused little impact on the filtration efficiency or resistance. |
| T135 |
147-404 |
Sentence |
denotes |
Previous studies reported the deteriorated performance with thermal treatment of electret filters [10,41], but most of the performance deterioration occurred with harsher conditions (120 °C, 48 h) and especially for materials with high dielectric constants. |
| T136 |
405-602 |
Sentence |
denotes |
Aging the electret filter at an extremely high temperature can trigger the mobility of polymer chains and charge carriers, leading to the loss of charges and increased particulate penetration [41]. |
| T137 |
603-841 |
Sentence |
denotes |
In this study, the polypropylene electret filters were treated by the oven-dry condition that was relatively mild and short-term (90 °C, 1 h); and for this reason, the oven-dry treatment caused negligible effect on the performance change. |
| T138 |
842-1087 |
Sentence |
denotes |
UV irradiation may influence the performance by causing the surface oxidation, turning the surface hydrophilic [42]; and the increased conductivity in a humid condition can lead to the loss of charges, reducing the filtration efficiency [43,44]. |
| T139 |
1088-1235 |
Sentence |
denotes |
However, UV irradiation, at the level of 10 W power with 253.7 nm wavelength, of this study did not significantly affect the filtration efficiency. |
