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Trial Number 1

Trial Purpose:

To evaluate residue via coefficient of friction for aerosol dust mop treatment products.

Date Run:

06/02/2009

Experiment Procedure:

Coefficient of friction was measured with an IMASS, Inc SP-102B-3M90 Slip/Peel Tester (Figure 1). Two types of friction coefficients were measured using this instrument. The first, Static CoF, was determined by obtaining the force required to move the specimen from a stationary position. The second, Sliding CoF (or Kinetic), was found by measuring the average force required to maintain movement at a certain rate. Measured forces will have peaks and valleys in the amount of force needed to keep moving. Average these values results and dividing by the weight of the object will result in the desired coefficient.
Figure 1. IMASS Slip/Peel Tester

The Slip/Peel tester was first adjusted to ensure that the device was properly calibrated for the sled weight being used. A coupon was then placed and clamped onto the bed of the device. The speed of the bed was set to 45”/min. The instrument records two values, the peak, the valley and calculates the average. The device was run three times per coupon for measuring the Static CoF and three times to measure the Kinetic CoF. Each coupon’s value was averaged and then the values for each finish (three coupon averages) were averaged to get one value for the Static Coefficient of Friction and one value for the Kinetic Coefficient of Friction. The coupons were then sprayed with the supplied cleaning product. The cleaner had a 5 second dwell time on the glass coupons and then was wiped off using a Kmberly-Clark Wypall X60 reinforced wiper. A second set of readings for SCoF were recorded for the treated surface. Following the SCoF a second application of the cleaner was applied to the measuring the KCoF.

These values for treated coupons were compared to the CoF for the same untreated coupons to determine the effect on CoF.

Coefficient of Friction = Ratio of tractive (pulling) force to the normal force (sled weight):
CoF = F/N = (Tractive force)/(Normal Force) = (meter reading)/(sled weight)
Sled weight = 1

Trial Results:

The Amrep A00811 product resulted in a decrease for both static and kinetic CoF. The Swiffer product and the Amrep Misty A00810 had the opposite with increases for both. The Spartan and Claire products had mixed results. Spartan's Dust Mop/Cloth treatment had decreases in the static CoF high and low values but had a slight increase in the average value. The kinetic CoF had a decrease in the low value but slight increases in the high and average values. Claire's Dust Up had decreased values for the static CoF measurements and the kinetic CoF low and average values.

Initial CoF   Static     Kinetic  
Coupon # Peak Valley Average Peak Valley Average
A 625 465 545 613 539 592
  665 488 562 615 537 595
  687 521 585 662 528 614
B 650 536 586 618 544 591
  689 541 588 640 540 607
  677 563 592 635 528 593
C 690 433 577 615 398 544
  752 442 557 640 423 569
  765 401 545 645 396 565
J 720 406 465 526 434 488
  741 432 476 516 432 486
  703 447 485 576 445 506
K 787 313 428 518 377 455
  830 355 453 545 362 447
  682 349 456 525 346 445

Overall Averages

    Static     Kinetic  
Coupon # Peak Valley Average Peak Valley Average
A 659 491 564 630 535 600
B 672 547 589 631 537 597
C 736 425 560 633 406 559
D 721 428 475 539 437 493
E 766 339 446 529 362 449

Treated CoF

    Static     Kinetic  
Coupon # Peak Valley Average Peak Valley Average
A 467 229 312 480 275 402
  423 244 340 511 275 422
  449 263 375 530 299 438
B 709 339 511 963 537 740
  865 481 665 976 568 920
  1017 556 777 1011 598 847
C 522 324 435 632 269 474
  644 395 532 657 285 498
  688 408 569 673 360 531
J 492 274 358 537 324 414
  530 291 389 536 316 415
  518 287 381 612 329 447
K 700 491 595 843 634 760
  736 534 675 900 705 827
  790 633 726 964 722 863

Overall

Treated CoF   Static     Kinetic  
  Peak Valley Average Peak Valley Average
A 446 245 342 507 283 421
B 864 459 651 983 568 836
C 618 376 512 654 305 501
D 513 284 376 562 323 425
E 742 553 665 902 687 817

Final - Initial

    Static     Kinetic      
  Peak Valley Average Peak Valley Average Static Kinetic
A00811 -226 -301 -246 -124 -254 -176 decrease CoF decrease CoF
A00810 128 33 91 350 162 276 increase CoF increase CoF
Spartan -103 -53 37 115 -132 8 -/+ CoF +/- CoF
Claire -253 -55 -70 32 -39 -24 decrease CoF -/+ CoF
Swiffer 742 553 665 902 687 817 increase CoF increase CoF

+/- CoF more increase than decrease
-/+ CoF more decrease than increase

Success Rating:

A cleanliness study, addressing only various analytical techniques.

Conclusion:

Results for the dust mop treatment products did not yield any discernable pattern amongst the various formulations. The Amrep Aspire was the only product to cause the coefficient of friction to decrease for both static and kinetic measurements.

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