1 Date of download: 9/30/2017 Copyright © ASME. All rights reserved. From: A Three-Dimensional Quantitative Structure Tribo-Ability Relationship Model J. Tribol. 2015;137(2): doi: / Figure Legend: Comparison of EVA spectra and observed IR spectra

2 Date of download: 9/30/2017 Copyright © ASME. All rights reserved. From: A Three-Dimensional Quantitative Structure Tribo-Ability Relationship Model J. Tribol. 2015;137(2): doi: / Figure Legend: Prediction performance of EVA model. (a) Prediction of VS. (b) Prediction of FF. (OBS: the observed or experimental scale of antiwear and antifriction; PRED: the predicted scale of antiwear and antifriction in the models).

3 Date of download: 9/30/2017 Copyright © ASME. All rights reserved. From: A Three-Dimensional Quantitative Structure Tribo-Ability Relationship Model J. Tribol. 2015;137(2): doi: / Figure Legend: The PLS coefficients of antiwear and antifriction models. (a) The curve of antiwear model and (b) the curve of antifriction model. Horizontal axis denotes frequency ν; longitudinal axis denotes the value of PLS coefficient (defined in Eq. (5)).

4 Date of download: 9/30/2017 Copyright © ASME. All rights reserved. From: A Three-Dimensional Quantitative Structure Tribo-Ability Relationship Model J. Tribol. 2015;137(2): doi: / Figure Legend: The increment of EVA–PLS model when butyl is substituted with octyl (DEVA: compound 8 versus compound 9). (a) The VS as a function of the vector DEVA (the EVA descriptors difference of compound pair). (b) The FF as a function of the vector DEVA (the EVA descriptors difference of compound pair).

5 Date of download: 9/30/2017 Copyright © ASME. All rights reserved. From: A Three-Dimensional Quantitative Structure Tribo-Ability Relationship Model J. Tribol. 2015;137(2): doi: / Figure Legend: The increment of EVA–PLS model when butyl is substituted with decyl (DEVA: compound 33 versus compound 35). (a) The VS as a function of the vector DEVA (the EVA descriptors difference of compound pair). (b) The FF as a function of the vector DEVA (the EVA descriptors difference of compound pair).

6 Date of download: 9/30/2017 Copyright © ASME. All rights reserved. From: A Three-Dimensional Quantitative Structure Tribo-Ability Relationship Model J. Tribol. 2015;137(2): doi: / Figure Legend: The increment of EVA–PLS model when butyl is substituted with dodecyl (DEVA: compound 7 versus compound 9). (a) The VS as a function of the vector DEVA (the EVA descriptors difference of compound pair). (b) The FF as a function of the vector DEVA (the EVA descriptors difference of compound pair).

7 Date of download: 9/30/2017 Copyright © ASME. All rights reserved. From: A Three-Dimensional Quantitative Structure Tribo-Ability Relationship Model J. Tribol. 2015;137(2): doi: / Figure Legend: The increment of EVA–PLS model when phenyl thiazole is substituted with benzoxazole (DEVA: compound 29 versus compound 31). (a) The VS as a function of the vector DEVA (the EVA descriptors difference of compound pair). (b) The FF as a function of the vector DEVA (the EVA descriptors difference of compound pair).

8 Date of download: 9/30/2017 Copyright © ASME. All rights reserved. From: A Three-Dimensional Quantitative Structure Tribo-Ability Relationship Model J. Tribol. 2015;137(2): doi: / Figure Legend: The increment of EVA–PLS model when phenyl thiazole is substituted with benzimidazole (DEVA: compound 27 versus compound 28). (a) The VS as a function of the vector DEVA (the EVA descriptors difference of compound pair). (b) The FF as a function of the vector DEVA (the EVA descriptors difference of compound pair).

9 Date of download: 9/30/2017 Copyright © ASME. All rights reserved. From: A Three-Dimensional Quantitative Structure Tribo-Ability Relationship Model J. Tribol. 2015;137(2): doi: / Figure Legend: The increment of EVA–PLS model when propyl is substituted with allyl (DEVA: compound 31 versus compound 28). (a) The VS as a function of the vector DEVA (the EVA descriptors difference of compound pair). (b) The FF as a function of the vector DEVA (the EVA descriptors difference of compound pair).

10 Date of download: 9/30/2017 Copyright © ASME. All rights reserved. From: A Three-Dimensional Quantitative Structure Tribo-Ability Relationship Model J. Tribol. 2015;137(2): doi: / Figure Legend: The increment of EVA–PLS model with xanthionyl (DEVA: compound 13 versus compound 32). (a) The VS as a function of the vector DEVA (the EVA descriptors difference of compound pair). (b) The FF as a function of the vector DEVA (the EVA descriptors difference of compound pair).

11 Date of download: 9/30/2017 Copyright © ASME. All rights reserved. From: A Three-Dimensional Quantitative Structure Tribo-Ability Relationship Model J. Tribol. 2015;137(2): doi: / Figure Legend: The increment of EVA–PLS model with thiophosphoryl (DEVA: compound 17 versus compound 21). (a) The VS as a function of the vector DEVA (the EVA descriptors difference of compound pair). (b) The FF as a function of the vector DEVA (the EVA descriptors difference of compound pair).