This research work was to study the toughening modification of polylactic acid by the mixing with epoxidized natural rubber (ENR) and the increase of effectiveness of mechanical properties with a compatibilizer. Enhancement of properties in polylactic acid was evaluated by tensile and impact testings Fourier-transform Infrared Spectroscopy (FTIR) technique Differential Scanning Calorimetry (DSC) technique and Scanning Electron Microscope (SEM). For the addition of ENR it was revealed that the increase of ENR contents improved elongation at break and impact strength but decreased tensile modulus and ultimate tensile strength. Glass transition temperature (Tg) percentage crystallinity and the melting point of polylactic acid tended to decrease with the addition of ENR. Chemical change was found that position of C=O peak in polymer blend was slightly shifted as compared to the spectrum of neat polylactic acid. The optimum formulation for toughening modification was ENR content of 30 wt%. Its impact strength was 1982.55 % of neat polylactic acid. For increasing effectiveness of mechanical properties with a compatibilizer it revealed that the addition of Joncryl ® ADR-4300 as compatibilizer improved both tensile and impact properties. The optimum loading of a compatibilizer for improving mechanical properties was 0.5 wt% of polylactic acid. The decreases of crystallinity and melting point of polylactic acid with adding Joncryl ® ADR-4300 might be because Joncryl ® ADR-4300 was also chain extender of polylactic acid and it might be obstructing crystallization. The presence of Joncryl ® ADR-4300 unaffected on Tg value and chemical change.

Nowadays one of the automotive engineering is conductivity of brake pads playing a role in friction coefficient which means safety of customer. Thus thermal properties have been improved using composited materials. This project aims to study the conductivity behavior of 3 different brake pads which are supported by the company Compact International (1994) Ltd. For experimental works temperature based on brake condition was simulated from 200 to 400°C and cooled down from 400 to 200°C at 1 5 and 8 MPa of pressure respectively. By standard JIS D4413 testing condition of pressure was referred. The non-linear of conductivity value are calculated from the temperature under steady state condition. As a result of testing there are several of parameters effecting on the non-linear conductivity value. The brake pad that is a mix of high-fiber affects the fluctuation of thermal conductivity. At the same time lubricant in the brake pad cause the stability of conductivity value in different temperature range at the same pressure. On the other hand the brake pad mixed hi-copper inspires the narrow range of conductivity value in different pressures at the same temperature. Moreover the conductivity value as a mention is inversely proportion with the coefficient of kinetic friction.

The magnetic properties of Ba2FeMoO6 (BFMO) BaCO3 (Barium carbonate 99.9%) Fe(NO3)3.9H2O (Iron(II) nitrate 99.0%) and Mo03 (Molybdenum trioxide 99.0%) have been characterized. A slurry was prepared by mixing the powders with deionized (DI) water at a ratio of 1:7.5: by solid state reaction method through compression. In the case of BFMO sintering at 800 °C for a 4 6 and 10 hours. exhibited the largest hysteresis loop at 50 K. In addition the values of Ms and Mr indicate ferromagnetic behaviour in BFMO ceramics sintered from 600 °C to 800 °C. Finally the value of magnetization was reduced by using a lower sintering temperature SEM analysis revealed the physical appearance of sintered BFMO ceramic and showed the morphology of the BFMO powder was. coarse with an average diameter of 2 microns

The purposes of this research are : 1) effectiveness of teaching of multimedia teaching materials Basic Subjects Inventions About Artificial Flowers for students of Home Economics Saowabha Vocational2) a study of student is satisfaction with teaching of multimedia teaching materials Basic Subjects Inventions About Artificial Flowers for students of Home Economics Saowabha Vocational and 3) the assessing is possibility and the usefulness of the medium of teaching of multimedia teaching materials Basic Subjects Inventions About Artificial Flowers for students of Home Economics Saowabha Vocational. The population of the study is that students of Home Economics Saowabha Vocational 1st year about 19. The instruments used in this research include multimedialearning assessment tests and questionnaires. The statistics used in this study include E1 / E2 average and the standard deviation. The research found that as follows: 1) students were evaluating during the study a performance fee equal to 80.68 and the assessment report. The performance was 85.74 indicating that the medium of instruction multimedia performance was in accordance with the specified criteria. 2) Student satisfaction with teaching the basics of multimedia creationThe flowers were ; 2.1) the invention of paper roses student was satisfacting the high level.The first two items in order from most to least found that the side with the highest mean score. The media was inferior to the benefits they were receiving from the media and the minimum content. 2.2) Artificial flowers from tissue paperstudent has been satisfacting the high level the first two items in order from most to least found that the side with the highest mean score. The benefits were receiving by the media followed by the media minimum and content and 3) the assessing possibility and the benefits of will have been learning the basics of multimedia creation. The Artificial Flowers Overall were experts opine that appropriate possibility and helpful the high level.

In the rubber situation The problem has accumulated. All sectors are mobilized. The idea is to solve the problem of falling rubber prices. Or the output overflow. Overpriced The rubber growers. Have been affected by the same. This is a problem that many sectors. Trying to find a way out Research or development Products that can be used to produce rubber. It is another way to alleviate the suffering of farmers. The characteristics of rubber processing. There are many types of rubber raw rubber rubber and rubber. And have specific properties in themselves. The obvious is flexibility. Rubber quality in each production source is not equal. It is a problem of creating products with many components of rubber. But many of the products do not require the quality of the rubber. The problem is less. Such as shockproof materials in various packaging. Especially the material inside the packaging. For glass and ceramic products Only flexible features are needed. The rubber coating on the material has been invented many experiments. Be it on wood on fabric etc. as well as paper. But rubber coating on paper. To use for such purposes. It is made to be shockproof material by means of the pump in the packaging. There is no such trial. Researchers have the idea to study and develop the process. Cushioning material from rubber coated paper. To be suitable for packaging applications for glass and ceramic products. With regard to the ability to actually use. Value for money. Industrial production The satisfaction of the consumer. And the standard of packaging. The researcher found that. Applying the varnish on three variables and mixing the three compounds results that if the coating is applied on a material with a resilient property it will increase the elastic properties of the material. Corrugated paper is particularly suitable because the rubber can be inserted into the corrugated paper inside the corrugated paper. The test results are very good. Satisfaction I found that the content provider is very satisfied with the format and usage. But in weight it is also a problem because of the water that makes the weight of the packaging. The researcher should consider that the weight of rubber latex should be improved.